I am a new user to Spotify from NZ and the first thing I miss having moved from iphone's built in music player is the sleep timer. I understand this feature stopped working in one of the recent versions of spotify App. If it is a compatibility issue partly related to iOS 5, may I suggest that you build a sleep timer into the App itself?
Also, as suggest by one other Spotify user, Nyx, it would be even better if you could include an alarm featuer so we can all wake up to our favourite playlists within Spotify.
Thanks again for all the great work you guys are doing and we really hope you would consider this new idea.