1. stop making new Pokemon
2. focus on existing gens
3. simplify EV training
4. get rid of the 8 badge/pokemon league format. it makes 90 percent of the game's content not worth revisiting.
5. introduce trainer scaling for random encounters
6. diversify trainer pokemon and movesets (fighting 3 Machop and 1 Machoke is just tedious)
7. mega evolutions are a gimmick cash-in on popular pokemon from earlier generations. drop the mechanic and focus on making these pokemon fun to play in a competitive environment
8. more items to ease ridiculous grind to Lvl 100
9. allow character customization
10. stop making 3DS exclusives

there