Active subscriber count should be the more active one, but I agree.

Ideally we’d have native multi a communities right now, so I could see all of my subscribed Linux communities in my Linux multi, all of my subscribed ttrpg in the ttrpg multi, etc.

Definitely an improvement that could be in place. I think letting the user combine the groups to see would be best, because then you can group how you’d like. Having multiple communities with similar topics is no different than reddit, but reddit has multis.