I don't know if the world of podcasting, all 8,000 feeds, can live in the already crowded space of Windows Media, or iTunes. I certainly was disappointed by the podcasting UI in iTunes. Besides the few shows that got selected for the front screen, searching
for other shows is a pain.
You're given a category, sub-category, and show interface that consist of lines of text. It's certainly better than the nested folder UI most normal people have problems with, but it's not much better.
I don't know how to solve the problem besides saying, just make it simple.
PS. One of the most annoying thing about iTunes, so far, is that you can't listen to a podcast & go browsing for another one because the audio stops once you navigate away from that podcast.
PPS. Another annoying thing is that sometimes, when clicking on a podcast, iTunes would prompt me to enter my account info (this is a free podcast, mind you). If I click "Cancel", it'd also cancel my action, ie. not play what I wanted. Ended up having to click
on it twice to get it to play.