>>478341941. No shitty gimmicks like mega evolutions, Z-moves or shitmax.
2. At least a 100 new Pokémon instead of a dex consisting of 60-80 new Mons.
3. A lot of good post-game content.
4. Hard mode (wherein opposing levels are scaled to your highest in-party level, changing your Pokémon counts as a turn and no use items in-battle etc.)
5. Pokédex with all Pokémon instead of one with half of them so they can sell us the rest via DLC.
6. Return to god tier DPP era pixel graphics or learn to make good 3D graphics.
7. Make shinies rare again. No fucking chaining or bullshit medals to increase your odds of finding one. I fucking hate it how easy shinies are to find. They're supposed to be rare as shit, that's the point.
8. If not all, then make it so that you can catch at least 400-500 different Pokémon in the game. All would be ideal, though.
9. Don't make the plot all about the fucking legendaries/evil team, more down-to-earth or unique story would be nice for a change.
10. Sprinkle interesting lore all around, making exploring more rewarding.
11. You know how every gen had different dex entries for the same Pokémon? Add them all into the Pokédex.
12. Make EVs and IVs visible, add better ways to affect them.
13. Fuck TRs, make everything TMs and reusable, or at least give us a way of getting infinite TRs.
14. Make it so that in the first three routes you can actually find solid Pokémon with good coverage to complement starters.
15. Make it so that over the course of the game you can find actually usable Pokemon of all types BEFORE the game is almost over.
16. Add more gyms, make them harder and replayable. (You can challenge the leaders again daily, they get stronger after each badge you earn and become really hard after beating the champion.)
17. Add in more regional variants of different older Pokémon.
18. Change the order of gyms depending on your starter Pokémon and difficulty.