Easier way to fix the game: Put Rush Duel's draw phase where you draw until you have 5 cards in hand, but only after the third turn so games can bounce back and forth as if players start new whole games.
Ramp up Life Points to 40000 so if you want to oneshot players, you better earn it through hard hitting shit (40k because it's 1 zero higher than the anime's 4000).
Extra deck is 20 cards long without any added restrictions,
Side deck is 30 cards long and the player going second game 1 can uset the side deck while the player going first gets a draw on DP just like pre-arcV era.
Missing the timing stops existing for floaty stuff like Gustos, stuff like TD Titan and House Dragonmaid get an erratum to explain they only pop shit if nothing is chained to the card prior.
Make rulings/SEGOC mechanics are consistent across all regions using OCG as a basis (therefore public rulings available for all to see) so judges can be justified to act as janitors while players can look up rulings with their phones to settle disputes.
Speaking of paper play, legalize using dice for stuff like old apolloursa's negates or spell counters or swords or revealing light turns, among other accessories to keep track of shit like that lunatic who brought a fucking Guess who playboard to mark Ritual Beast effects.
Then just remove randomness from opening packs so 1 box of any set (DBP, Core set, reprint pack or duelist set) is guaranteed to have 3 of everything, only rarities stay random (highest rarity prints do not get censored so poorfags get labrynth covered with her jersey from the concept art while richwhales get labrynth wearing almost nothing) so shit's cheap and available for anyone. Also sanrio crossovers get official altarts (give me Kuromibel)
And make anime decks the meta, it's time to do away with game original stuff.