I just got my 8x, first windows phone coming from Android. I used PocketCast for my podcast subscriptions. It was awesome. I find it to be the only thing I find lacking from WP8. Here are the features I think are required for a great podcast app.
- Queue
- Automatic download daily(changable) of new podcasts
- Automatically add downloaded to queue
- re-arangeable queue
- variable playback speed (1.5x or 2x)
- Automatic delete of podcast after completed