"Download Later" category
Would you be able to create one more podcast category called something like "podcast queue". The purpose of this category is to add(or just bookmark) the podcast episodes, which should be downloaded in some moment in the future. This feature could help on users with small amount of free phone storage, but with a huge list of interesting podcasts waiting to be heard sometimes in near future.
Why not just set the app to not download until you play that specific episode? (That's a current option, btw.)
At most I think all we'd really need is a way for it to hold on to the currently paused episode rather than downloading it fresh each time the app closes and reopens (or whatever the current behavior is that redownloads files).