Unfortunaly tvOS most likely will not go dark scheme, because it was dark scheme and they changed it to light. Which I agree is a horrible choice, since every night watching tv before bed on AppleTV is blinding when the white home screen appears and because black compliments video thumbnails so much better. The only hope is if Apple is planning a dark option for iOS like macOS then there is a chance they might add dark as an option on tvOS but not likely.
A few of the other items are possible and things that would help most all users, where is the majority of the wish list items appear more to be bugs or issues particular to the user or a small subset of users rather than issues effecting everyone or the majority.