1. Remove Shiny Lock
2. Remove Distribution Only Legendaries
3. Battle Frontier (Emerald version preferably) and/or PWT
4. Return PSS
5. Return Horde Encounters
6. Keep cutscenes to essential moments, not just to fill up time+make them skippable after first playthrough.
7. Allow saving right before choosing your starter/catching Legendary and other interactable Pokémon (understandable why we've been moving away from this, but just because it's understandable, doesn't make it right).
8. A protagonist that is clearly in their late teens or a young adult [It has been over 20 years since the games were first released in Japan, it's time to age up]! It would be great if the protagonists we've seen are a fake-out that turn out to not be our player characters (or have an option to choose between different character models depending on your age)! I cannot understand why Wicke pointedly remarks on your 11 year old self, which in retrospect makes other interactions within Sun and Moon very questionable.
9. Have a rival that is a true rival, not a friendly presence who is barely competent (Hau and Barry are the WORST to interact with, but even Barry had decent Pokémon towards the end of the game). I see Hau is returning, I just hope he's not a dingbat this time.
10. Add options to; change the difficulty setting, enforce Nuzlocke rules, and/or allow randomisation after fully completing the story for the first time.
11. Keep battle music as battle music (Hau's supposed battle theme is not suited for a confrontation, and the Kahuna battle theme builds well but spectacularly fails right when it should have gotten epic).
12. Don't be given or have the ability to catch a Legendary Pokémon with 600+ BST before entering the Hall of Fame for the first time in a playthrough.
13. EXP Share needs reworking (either have it function exactly like the EXP All in RBY or have it revert to a held item).
14. RotomDex is cringy and unnecessary. I don't want destination markers, stupidly long Pokémon registration times, or any electronic device in the Pokémon universe calling me 'big boy'.
15. Make Trials better for this game, some have been added, let's hope they are engaging!
16. Give weaker Pokémon higher BST's/better movepools/new forms to allow for more diversity within competitive battling. The small changes that have been made are a step in the right direction.
17. Fairy type nerf (Fire is super effective, Dragon is not very effective)
18. Gengar wants Levitate back!