Correct me if I'm wrong, but it's my understanding that I have to add each podcast to the playlist individually. I have no option to say "add every podcast from this particular feed to the playlist".
Also - sometimes I don't want to mix and match podcasts in my playlist. It gets messy if I want to listen to podcasts 1 through 10 from feed A, but then, say, midway through I decide to listen to podcasts 1 through 10 from feed B. If I were to do this via playlists, I'd have to manage/clear/add/delete/etc...otherwise I would still have podcasts 6-10 from Feed A that I no longer wish to listen to. I was just envisioning a way to start playing all podcasts from a Feed A (once you start playing a podcast), then if I click on a podcast in Feed B, it would play all podcasts from that feed, getting rid of any reference to Feed A. Kinda like how it works in the media player.
Anyway, as you can tell I'm incredibly lazy
Obviously all of this stuff is low priority....