Hi, @tartanspartan
For feature request you should go to:
https://launchpad.net/podbird
Create a bug and tag it as part of the "wishlist"
And it seems to me your request is more general and is worth a dedicated thread in the general category maybe.
I think this is not simple at all and might require heavy rework of the system.
Or maybe I'm wrong and the account management feature can be used.