Yes - I really hope they sort out categorisation for movies etc. I have my DVD collection and a couple of hundred family videos - accessing these from AppleTV is a real pain at the moment.
I hope they allow the storage of video and music on different drives within the same "library". Forcing video to be on the same drive as music (assuming that you want to keep your libraries organized) seems dumb to me, and really inconvenient for those of us with very large music and video collections.
I'd like to see iTunes be able to read and store DVD images as well. All this conversion crap is really for the birds.