CHIME NOISES INTENSIFY
I'm hoping for more ice types! They're a fun type, and there's usually only like 5 ice types introduced each generation, and that's including the NFEs. Ice is a really interesting and fun type, and they could have some really interesting pokemon types with it!
And I'd also love some more strong bug types, as there were many introduced in fifth gen. The more the merrier, in my opinion! (and no more butterflies/moths please, there are some really cool bugs for inspiration out there ^_^)