allow selection of feeds in "show posts from my feeds"

[ameliamnesia]

Is your feature request related to a problem? Please describe.

not exactly a problem, i think this is a really cool experimental feature but it would be nice to have some control over it

Describe the solution you'd like just as a rough idea i was thinking maybe it could be a selection on the "edit feeds" page, see screenshot for example

Additional context

[RTbecard]

Bump this. My motivation for wanting this feature is that i'd like to have my feeds with low traffic integrated into my homefeed, then leave my high traffic feeds in their own container, so they don't completely overrun my homefeed.