Add user-updatable sort order fields (at least 3) to allow for custom sorts in playlists. This could be used to create alternative orders for movies (Star Wars Timeline, Marvel Chronological vs Release), sorting episodes from different shows with the same characters (Scooby-Doo’s tangled seasons between different shows), Shows that are broken up into multiple episodes in TVDB vs original aired episodes (Rocky and Bullwinkle, Super Friends).
It would need to be available in smart playlist filters as a sort option.
This could also assist in creating the type of smart playlists available in PseudoTV natively, especially if combined with the Available Episode Order feature request.