Have a setting to store and keep the latest amount of user defined amount of podcast per subscription.
Example. If you set to just store 3 podcast episodes per subscription, then each time a new episode is downloaded then the oldest one will be deleted.
This feature has been delivered in the latest version of Podcast Addict (v1.23)
Long press on a podcast (main screen) and select ‘Custom Settings’ from the menu. From there you will be able to override the ‘Automatic Cleanup’ settings