App version: 2.6.1 via Google Play
Problem you may be having, or feature you want:
In the same way that there are global settings for playback speed, automatic deletion, etc. which can be overridden on a per-subscription basis, it would be nice to have global subscription filter settings.
I prefer to only show unplayed episodes in subscription view, and it is a bit of a hassle to add this filter to each subscription.
Add global subscription filters to the settings, and modify the UI for per-subscription filters to include a checkbox to use the default filters, like the UI dialog for playback speed.