I hope we'll still be able to choose a skin color, or even though I see no reason for them to remove that. About the outfits, I hope there are gonna be some like the Lurantis/Kommo-o outfit in USUM.
I don't really know what I want, other than long pants. I can not express how much the lack of long pants in S/M/US/UM annoyed me.
I would appreciate clothing that more resembles the clothing presented in Pokémon Go. I really like the clothing options in the game and how much you can customize it (even if it is just colors).
I really hope they add some ridiculous-looking articles of clothing that I can wear in serious cutscenes. More variety with the colours available would be fantastic, too.