There's a lot of wasted space on the left. Having the Recorded and Scheduled tabs horizontally across the top would fix that.
Individual recordings take up a lot of vertical space. I think they could easily be compressed by 50% or more (especially if they are full width).
Could we add the ability to delete all episodes of a recording maybe with a context menu we get after a long press on the series entry? (Context menu could also be used to manage the recording details.)