I would love a more in depth way to split my playlists up. Right now I have complete TV series setup as playlists so I can watch them in sequence without needing to manually go to the next episode. As well as full movie franchises, collections and my favourites in certain genre types all set to playlists. Currently though everything is all mixed together so when browsing my playlists for shows I may want to watch a lot of the content is movie related and vice-versa.
A nice addition would just be a simple separation of video playlists into Movie playlists and TV Show playlists.