>>347238031. Restore Granite Cave and other simplified locations to their former, better forms (Sky Pillar, Meteor Falls iirc, etc.).
2. Reduce Exp. Share power or simply make it a held item again.
3. Updated teams from Emerald
4. Replace Maison with Tower, maybe add a rental/Factory mode inside.
5. GBA Sounds (early game available)
6. Move Lati@s event to later in the game, at least after Gym 7/8.
7. Don't allow Mega Evolution until after Gym 7 or 8
8. At least minimal customization
9. QOL improvements added in SM, like better PC menu and better move learning menu, etc.
10. Some modicum of customization
11. Gen 5/7 Exp. Scaling, but an added cap at level 50 so it doesn't continue getting worse after that.
12. Game Corner shifted into Voltorb Flip like HGSS.
13. Following Pokemon, like HGSS.
14. Online contests
15. Gym leader rematches
16. Return to old Safari Zone
17. Double bikes available pre-E4
18. Expand new mauville
19. Magma base in Volcano instead of Lilycove
20. More Emerald content, like
>>34723846 said