>>45079578If you mean remove and replace, I'd say mega forms. Give megas ONLY to underpowered shitmons, and adjust the lore to reflect that it's the Pokemon's way of filling the gap in power because they love you so much they're willing to put in the extra effort. Also maybe remove mega stones.
If you just mean remove, then EVs/IVs, Max forms, or in-game cutscenes.
EVs/IVs: normalfags don't even know about it and it's an irritation for anyone who actually cares.
Max forms: Fuck having a special mode that only works in very select parts of the game, and wrecked competitive play because of the sheer fact it's totally universal and just buffs already strong Pokemon. Also 99% of Gmax is worthless.
In game cutscenes: they look like ass, animate like ass, and generally just have people standing in place, rotating, then walking forward and rotating again. If it was up to me, there'd be a couple animated cutscenes spread through the game, like one for the beginning, one for the end, and one for the villain master plot reveal, or something.
If I had to pick just one, I'd say EVs/IVs, probably. Breeding thousands of Pokemon just to get a shiny with bad IVs is the number 1 reason I don't breed anymore.