Playlist with advanced and/or cases
Could be nice if rhythmbox supports extra and/or cases for the playlists, like in iTunes (image example), for example consider you want a smart playlist with genres "Classic*" (multiple classics like funk, rnb, soul...) so I set an entry in "genre contains...", but then I want to skip the cases of "Classical" genre music, and also include the genre "80s", actually we can't do that, there's an example with iTunes:
iTunes: