Multiple Priorities lists
It would be nice to setup multiple priority lists. If you want to listen to "Business podcasts", you could have a different priorities list with certain podcasts ranked higher in the list. Then if you're wanting inspiration or entertainment, you could switch between your priority lists accordingly. All podcasts would still be in the list, just in different orders. This would just be a quicker way of changing your priority lists without actually going in and editing the priorities on individual podcasts.
James McMahon commented
This would be really cool, and a possibly better alternative to the other ideas on here for multiple playlists