>>40574780GF-friendly ideas:
1. Drop IVs, and drop EV gain through battle, make EVs only go up with item/berry use.
2. Give the games a DQM-style breeding system and make Ditto the only way to guarantee one specific Pokemon.
3. More alt colors for shinies, but up the shiny chance slightly again.
4. Make the location where you fight actually matter, like rocky areas giving slight evasion, water slowing everything that isn't a water type, etc.
5. A second equip slot, call it "gear" or something. No consumables, they're more like actual equip items and a lot of non-consumable items are retconned (and buffed/debuffed) to fit the slot. Can't be knocked off or stolen, either.
Fuck GF-tier:
A. Literally any kind of super form that doesn't require being in a gym/raid fight, fuck the max forms
B. Expand the Ash-Greninja thing to all starters, but for you, not Ash. Maybe fusion? IDK.
C. Fuck your Pokemon silly, getting them pregnant. You can drop your league quest to start a family with your Pokewife/husband, and the game becomes a Sims clone with your new family, complete with the ability to give your wife a fertility treatment so she gets pregnant with octuplets and there's a cocoa butter rubbing minigame.
I'm not asking for much, honestly.