With that out of the way, LET'S BEGIN!
1. Agido the Ancient Sentinel & Kelbek the Ancient Vanguard
Make them so you cannot Special Summon non-EARTH Fairy monsters when you use their effects so you can't splash them with Tearlaments which is the main reason why they both got banned in the first place.
2. Artifact Scythe
Replace:
If this card is Special Summoned during your opponent's turn: Your opponent cannot Special Summon monsters from the Extra Deck for the rest of this turn.
with:
Your opponent can only Special Summon monster(s) from their Extra Deck once per turn while you control this face-up card Special Summoned this turn.
That way, it'll still limit the opponent's ability to access the extra deck, but now, it at least gives them 1 special summon from it, and it also now allows them to get rid of this monster or negate its effect with something to open up the extra deck, whereas previously, even if you played a card like Raigeki to get rid of it, its effect would still linger for that turn due to how it was worded.
3. Barrier Statue of the Stormwinds
Make it only limit Special Summons from a certain area like the hand, Deck, or GY.
4. Blackwing - Gofu the Vague Shadow
Make it so you cannot Special Summon monsters from the Extra Deck the turn you use it's Token Summoning Effect except DARK Winged Beast and Dragon Synchro monsters.
5. Block Dragon
Make it so you can only Special Summon 1 of them Once per turn and make it only protect Rock monsters from non-Battle Destruction during your turn only.
6. Cyber-Stein
Make it's effect a soft once per turn and make it only able to activate it's effect if you have no Spells/Traps in your Spell/Trap Zone. This way, you cannot abuse it with Reprodocus and Telekinetic Charging Cell to perform OTKs.
7. Dandylion
Make it's effect a Hard once per turn and make it so that the tokens cannot be used as Link Material the turn they are Summoned.
8. Djinn Releaser of Rituals
Replace
the other player cannot Special Summon while that Ritual Summoned monster is face-up on the field.
with
the other player can only Special Summon once per turn while that Ritual Summoned monster is face-up on the field.
This way it will Limit "the other player" from Special Summoning and only if they Special Summon. Being able to Stop Special Summons anywhere is the main problem.
9. Eclipse Wyvern
Make it only activate 1 effect per turn, and only once that turn.
10. Eva
Honestly, this card is Obviously Limited in the OCG and people aren't giving a damn in the OCG so it can come off with out a change. If it did, make it say "when" than "if" so it can miss it's Timing.
11. Fairy Tail - Snow
1 effect per turn, and only once that turn. Easy Change.
12. Fiber Jar
Like the other Jar monsters. I think this card can come off unchanged. If it did, just make it only shuffle cards from hand and field only.
13. Fishborg Blaster
Make it a Hard Once per turn.
14. Gimmick Puppet Nightmare
Replace If this card is Special Summoned, you cannot Special Summon any monsters for the rest of this turn, except "Gimmick Puppet" monsters. with " This card's owner cannot Special Summon, except "Gimmick Puppet" monsters. This effect cannot be negated. This way, you cannt give the effect to your opponent with "Albion the Sanctifire Dragon"
15. Glow-Up Bulb
Now that Linkuriboh is banned, I think this card can come off the list fine. Otherwise, make it only activate it's effect outside of the turn it is sent there.
16. Grinder Golem
Make it (and any copy of it) only able to Special Summon itself once per turn.
17. Jowgen the Spiritualist
Replace
Neither player can Special Summon monsters.
with
Then, if you destroyed any monsters with this effect: neither player can Special Summon for the rest of this turn while this card is face-up on the field. This way it would only block summons if you successfully destroy monsters with its effect.
18. Level Eater
Make it a Hard Once per turn.
19. Magical Scientist
Again, HOPT.
20. Master Peace, the True Dracoslaying King
Replace "Unaffected by the effects of cards with the same card type (Monster, Spell, and/or Trap) as the original card type of the cards Tributed for its Tribute Summon" with "Cannot be destroyed by the effects of cards with the same card type (Monster, Spell, and/or Trap) as the original card type of the cards Tributed for its Tribute Summon". This way, it will be imperveous from Destruction but it can be banished, bounced, etc. by other means.
21. Mathmech Circular
Make it only search Spells/Traps outside of the turn it is Summoned. Make it so you cannot Special Summon non-Cyberse the turn you activate either of it's effects.
22. Maxx "C"
Change its effect from:
During either player's turn: You can send this card from your hand to the Graveyard; this turn, each time your opponent Special Summons a monster(s), immediately draw 1 card. You can only use 1 "Maxx "C"" per turn.
to:
(Quick Effect): You can send this card from your hand to the GY and declare 1 place (hand, Deck, Extra Deck, GY); this turn, you cannot activate other cards or effects, also each time your opponent Special Summons a monster(s) from that declared place of theirs, immediately draw 1 card. You can only use 1 "Maxx "C"" per turn.
23. Mind Master
Make it a Hard once per turn.
24. Performage Plushfire
Again, Make it a Hard Once per turn on it's monster effect.
25. Phoenixian Cluster Amaryllis
Make it only able to activate it's effect to Revive itself up to 2 or 3 times per turn.
26. Ronintoadin
Make it's effect to revive itself once or twice per turn.
27. SPYRAL Master Plan
Make it only activate 1 effect per turn and only once that turn.
28. The Tyrant Neptune
Change the effect
" Target 1 Effect Monster in the Graveyard that was Tributed for the Tribute Summon; this card's name becomes that target's name, and this card gains that target's effects."
to
" Target 1 Effect Monster in the GY that can be Normal Summoned/Set that was Tributed for the Tribute Summon; this card's name becomes that target's name, and this card gains that target's effects.."
This way, you cannot use it to copy Lyrilusc - Independent Nightingale
29. Victory Dragon
I know this kinda sounds stupid, so change the effect:
If this card attacks your opponent directly and reduces their Life Points to 0, you win the Match.
to
If this card inflict battle damage to your opponent by a direct attack, you win the Duel.
30. Apollousa, Bow of the Goddess
Make it only activate it's effect to negate monster effects up to twice per turn.
31. Crystron Halqlifibax
Make it so you cannot Special Summon non-Synchro monsters from the Extra Deck the turn you activate it's effects. This way, it will still be powerful but not powerful enough to enter degenrate combos.
32. Curious, the Lightsworn Dominion
Honestly, we got new Lightsworn stuff from Legacy of Destruction so it can be able to come off the list without an errata. Otherwsie, make only dump Lightsworn cards.
33. Guardragon Agarpain and Guardragon Elpy
Make it so the Summoned monster cannot declare an attack or activate it's effects the turn it is Summoned.
34. Heavymetalfoes Electrumite
Make it's effects a hard once per turn.
35. Isolde, Two Tales of the Noble Knights
Make it only search and Summon FIRE, LIGHT, and DARK Warrior monsters with it's effects so you can't summon any of the Gouki and Amazoness Monsters. The only Archetypes outside of Noble Knights that fall under the category would be Igknight, Destiny HERO, and tellarknights. A lot of people suggest it to only search and summon the Noble Knights or make 1 of the Link Materials a Noble Knight monster, but it results in the card being unplayable.
36. Knightmare Goblin
This card can get off the list ever since Link Summoning is Weakend. Otherwise, Make it only prevent it's Fellow Knightmares from being targeted.
37. Knightmare Mermaid
I repeat, This card can get off the list ever since Link Summoning is Weakend. Make it so you cannot Special Summon non-Knightmare monsters from the extra deck the turn you activate it's effect.
38. Linkross
Make it so you cannot Special Summon non-Cyberse monsters from the Extra Deck the turn you activate its effect.
39. Linkuriboh
Make it so you can only use it's Revival Effect outside of the turn it is sent there.
40. Mecha Phantom Beast Auroradon
Make its Link materials WIND Machine monsters instead of any Machine monster to reduce splashability and it's effects a hard once per turn.
41. Prank-Kids Meow-Meow-Mu
This card can come off the list without one because Prank-Kids is one of those Mediocre Archetypes that sees play. if it did, make it only activate it's effects from the field or GY (and not the other way).
42. Predaplant Verte Anaconda
Make it's materials Predaplant monsters to reduce Splashability damn it.
43. Simorgh, Bird of Sovereignty
Make it only Summon a Level 6 or lower Winged Beast monster so you can't summon Dark Simorgh or Mist Valley Apex Avaian.
44. Spright Elf
Make it only protect Level/Rank/Link 2 monsters it points to. Make it so the monster Special Summoned by its effect cannot activate its effects this turn.
Summon Sorceress is being skipped because it's getting an Errata for real but not until a few months!
45. Superheavy Samurai Scarecrow
Make it so you cannot Special Summon non-"Superheavy Samurai" monsters the turn you activate it's effects.
46. Topologic Gumblar Dragon
Make it only able to activate it's effects outside of the first turn of the Duel. This way, you can't rip your opponent's hand during the said first turn.
47. Union Carrier
Change the effect from:
You can target 1 face-up monster you control; equip 1 monster to it from your hand or Deck with its same original Type or Attribute. The equipped monster gains 1000 ATK. If you equipped it from the Deck, you cannot Special Summon monsters with that Equip Card's name for the rest of this turn.
to
You can target 1 face-up monster you control; equip 1 Level 2 or higher monster to it from your hand or Deck with its same original Type or Attribute. The equipped monster gains 1000 ATK. Also, you cannot Special Summon from the Spell/Trap Zone nor inflict effect damage for the rest of this turn.
This way, you cannot abuse it with Dragon Buster Destruction Sword. Many people suggested it to only Equip Union Monsters or make it's 1 of it's materials a Union monster, but this change makes the card completely Unplayable.
48. Elder Entity Norden
Make it's effect a hard once per turn.
49. Fiendsmith's Lacrima
The banning of this card is pretty redundant with Beatrice, Lady of the Eternal banned, so it can get off the list as it is. If it doesn't work, make it you so you cannot Special Summon non-Fiend monsters the turn you use any of its effects.
50. Supreme King Dragon Starving Venom
As I said before with The Tyrant Neptune (#27) make it only copy monsters that can be Normal Summoned/Set.
51. Tearlaments Kitakallos
Make it so you cannot Special Summon non-Tearlament monsters the turn you activate any of it's effects. This way, you can't use it in other decks that rely on milling which is the reason why this card got banned.
52. Baronne de Fleur
Make it only negate cards or effects during your turn and only able to destroy Special Summoned monsters. Some suggested it must be summoned with Fleur Synchron instead of any Tuner or require a non-Tuner Fusion or Synchro monster, but this kills the card's Purpose rendering it unplayable.
53. Borreload Savage Dragon
Make it only negate Monster Effects so it parallels to Adamancipator Risen - Dragite. Another Level 8 Synchro monster who negates certain types of cards with the Right monster in the GY.
54. Chaos Ruler, the Chaotic Magical Dragon
Make it so you cannot Special Summon non-LIGHT or DARK Synchro monsters from the Extra Deck the turn you activate either of its effects.
55. Hot Red Dragon Archfiend King Calamity
Replace
"You can activate this effect; for the rest of this turn, your opponent cannot activate cards or effects on the field. Your opponent cannot activate cards or effects in response to this effect's activation."
with
"You can declare 1 card type (Monster, Spell, or Trap); while this card is face-up on the field, your opponent cannot activate cards or effects of the declared type on the field until the End Phase. Your opponent cannot activate cards or effects on the field in response to this effect."
So instead of stopping your opponent from playing the game, it stops your opponent from playing a card type and if they want to get the ability to use that card type back, they had to remove it.
56. Tempest Magician
Make it so it must remove spell counters from itself, not just anywhere on the field, to activate it's damaging effect.
57. Beatrice, Lady of the Eternal
Make it so you cannot activate non-"Burning Abyss" cards or effect the turn you dump a card with it's effect so you cannot use Knightmare Gryphon or Number 60: Dugares the Timelessto fetch a floodgate you dumped and reduce exploitation in Fiendsmith. A lot of people suggested to make it require 2 level 6 Burning Abyss monsters, but this makes it totally unplayable for a cause.
58. Kashtira Arise-Heart
Make it only banish cards that are being sent to the GY the turn it is Xyz Summoned and it's Detach 3 effect not a Quick Effect.
59. Lavalval Chain
Make it dump and place Laval cards and monsters respectively instead of any card.
60. M-X-Saber Invoker
Make it negate the Summoned monster's effects in a way similar to Rescue Cat.
61. Number 16: Shock Master
Replace
that type of card (if Spell or Trap) cannot be activated, or (if Monster) cannot activate its effects, until the end of your opponent's next turn.
with
Neither player can activate more than 1 card or effect of the declared type until the End Phase.
62. Number 42: Galaxy Tomahawk
Make it so you can only Special Summon from the Extra Deck once the turn you activate it's effect.
63. Number 86: Heroic Champion - Rhongomyniad
Replace
● 4+: Your opponent cannot Normal or Special Summon monsters.
with
● 4+: Your opponent can only Normal or Special Summon 1 monster per turn.
This way, it will not leave your opponent helpless meaning they can still get rid of it with a Kaiju or Underworld Goddess of the Closed World.
64. Number 89: Diablosis the Mind Hacker
Replace the effect:
If a card your opponent owns and possesses is banished face-down while you control this card (except during the Damage Step): You can banish cards from the top of your opponent's Deck, face-down, equal to their face-down banished cards.
with
If a card your opponent owns and possesses is banished face-down while you control this card (except during the Damage Step): You can banish the top card of your opponent's Deck face down.
and make it only activate 1 of it's effects per turn and only once that turn.
65. Number 95: Galaxy-Eyes Dark Matter Dragon
Reduce the number of Dragon monsters it dumps to activate its effect from 3 to 2 or 1.
66. Number S0: Utopic Zexal
Make it's Quick Effect only usable during the opponent's Battle Phase than any of their phases.
67. Outer Entity Azathot
Replace
After this card was Xyz Summoned, your opponent cannot activate monster effects for the rest of that turn.
with
After this card was Xyz Summoned, monsters your opponent currently controls cannot activate their effects this turn.
68. True King of All Calamities
Make it require at least 1 "True King" or "True Draco" monster as Xyz Material to Summon it. make it only prevent monsters that were not Summoned this turn with the declared Attribute
69 (LOL). Wind-Up Carrier Zenmaity
Make it's effects a hard once per turn and make so the monster summoned by its effect has it's effects negated.
70. Zoodiac Broadbull
Make it search Beast-Warriors with a different name that the cards on your field or GY and you cannot Normal Summon/Set, Special Summon, or activate the effects of the Searched monster (or any copy of it) the turn you activate it's effect and make it a hard once per turn.
71. Zoodiac Drident
This card went to Hell & Back, so no Errata what so ever. Otherwise, replace
target 1 face-up card on the field; destroy it.
with
target 1 monster on the field; destroy it.
Which makes it a Tornado Dragon, but for monsters
72. Brilliant Fusion
Make it so the Gem-Knight you Fusion Summon has to be at least Level 7 or higher. So you cannot Summon Gem-Knight Seraphinite for a Boost in Summons or Gem-Knight Lady Lapis Lazuli to deal heavy damage your opponent.
73. Butterfly Dagger - Elma, Card of Safe Return
Hard Once, twice, or maybe thrice per turns...
74. Cold Wave
Make it so it only stops the opponent's Spells/Traps for the turn its activated instead of also the turn after that.
75. Confiscation, The Forceful Sentry
Make it only remove monsters with an effect that activates from the hand.
76. Dimension Fusion
Make it so it requires both players to have at least 1 banished monster to work and make it so you cannot Special Summon from the Extra Deck the turn you activate it and make it a HOPT.
77. Deliquent Duo
Make it so the opponent must have at least 6 cards in their hand for you to activate this spell.
78. Giant Trunade
This card felt like getting limited without an Errata due to the likes of Harpie's Feather Duster. If it did, maybe make it only return face-up Spells/Traps in a similar fashion to Hey, Trunade!
79. Graceful Charity
Make it so you must Discard 2 first then draw 3 and you cannot add cards from your Deck to your hand outside of Drawing the turn you activate it. This way, the player will get screwed if it gets negated along side some cards not being able to activate their effects because they were sent there for a cost.
80. Heavy Storm
If you look at the OCG, they have it at 1 so this card can do the same without any changes. If it did, make it only destroy non-Pendulum Spells/Traps so you can't reset your Pendulum Zones.
81. Kaiser Colosseum
Make it so you need a minimum of 2 monsters, instead of a minimum of 1, for this card to work.
82. Last Will
Make it only able to Special Summon monsters if a monster was destroyed by your opponent's card so you can punish your opponent for using for using certain Removal Effects.
83. Mass Driver
Once/twice/thrice per turn. 'Nuff said.
84. Metamorphosis
Make it so the monster you summon with this effect can't be EARTH, so you can't bring out The Last Warrior from Another Planet or Naturia Exterio.
85. Mirage of Nightmare
Make both its effects 1 single effect so you can't just draw 4, pop this, then keep those 4 cards.
86. Mystic Mine
Replace:
If your opponent controls more monsters than you do
with:
If your opponent controls 2 or more monsters than you do
That way, it'll be much easier for decks to play around it while still heavily limiting plays.
87. Original Sinful Spoils - Snake-Eye
Make it only add or Summon Level 1 FIRE Pyro monsters, this way you can't use it to Summon/search Rescue-ACE Hydrant, Legendary Fire King Ponix, Kurikara Divincarnate, and some of the Infernoble Knights. A lot of people suiggesited it to make so you cannot Special Summon monsters outside of FIRE or DARK Spellcaster, Dragon, or Pyro monsters, but it's not good enough for a restriciton.
88. Painful Choice
Make it so the cards sent to the GY cannot activate their effects.
89. Pot of Greed
Make the effect apply to both players than just the opponent.
90. Prematrure Burial
This card might be able to come off the list by itself due to how it's just Monster Reborn's crappy cousin and Isolde's out of the Equation, otherwise make it a HOPT and destroy the equipped monster when it leaves the field instead of destroying it when it gets destroyed.
91. Smoke Grenade of the Thief
Replace
When this card is destroyed by a card effect while equipped to a monster
with
When this card is destroyed by a Spell/Trap card or effect while equipped to a monster
92. Soul Charge
Replace
"Target any number of monsters in your GY; Special Summon them, and if you do, you lose 1000 LP for each monster Special Summoned by this effect."
with
"If you control no monsters: Target monsters in your GY up to the number of monsters your opponent controls; Special Summon them (but banish them when they leave the field), and if you do, you lose 1000 LP for each monster Special Summoned by this effect."
93. Appointer of the Red Lotus
Honestly, in an era where Hand Traps are Powercrept, this card could come off the list without an Errata. Otherwise, make it so the banished card is returned to the hand during that turn's end phase instead of the opponent's next end phase.
94. Branded Expulsion
Make it so you cannot Special Summon non-Fusion monsters from the Extra Deck the turn you activate it if you control any of the monsters Special Summoned by this effect.
95. Imperial Order
Make it so it negates only specific spell effects instead of just all of them. For example, make this like a permanent Magic Deflector where it negates only Equip, Field, Continuous, and Quick-Play spell effects on the field. Using this to counter very specific spell-heavy strategies like Necrovalley is okay. Using this to completely lock out all spells, including normal, ritual, and pendulum zone spells, is the problem.
96. Last Turn
Make it only target a non-Effect monster just like how it was used in the Anime.
97. Red Reboot
Make it prevent Both players from Activating Trap cards than just the Opponent.
98. Return from the Different Dimension
This card might be Inferior than "Dimension Fusion" but it can get off the banlist without one thanks to Maliss. Otherwise, make it so you can only Special Summon from the Extra Deck once the turn you activate it.
99. Royal Oppression
Make it so that each player can use this card's effect once per turn.
100. Self-Destruct Button
Make it so you have to toss a coin, and if the result is heads, both players' life points become 0.
101. Sixth Sense
Make it so you cannot activate cards or effects from the hand or GY the turn you activate it and make it a hard once per turn. This way, you cannot use the Hand traps you drew nor exploit monster effects from the GY.
102. Summon Limit
Increase the number of monsters each player can summon per turn from 2 to 3 or 4.
103. Trap Dustshoot
Increase the number of cards your opponent must have in their hand to use from 4 to 6 or 7.
104. Ultimate Offering
Make it hard once/twice/thrice per turn.
105. Vanity's Emptiness
Make it so you can only activate it during your turn instead of also the opponent turn.