Appreciate you taking the time to articulate your thoughts on different features over the past week or so.
I'm open to hearing other people's critiques on the other aspects (if they have any), but everything makes sense, to me, until the "Low quality communities". I recall this "feature" being a point of contention in the past.
You said its not as effective as you thought it would be and you don't use it much, is it an opt-in feature? If not, can it be?
Alternatively, can admins make, alter, or add their own list?