Understandable; over the many years, the community structure has gotten somewhat unkempt and rather unruly, I'll admit. I think the best solution I've seen is regional instances -- if you block seattle.pink and social.seattle.wa.us on mastodon, you can really clear up a lot of the Seattle chatter, but there isn't a regional instance for us to host our communities that you could block easily. Realistically, I'm not sure how much a field would help -- you'd still see away games for the Seattle sports teams even if you muted the Seattle geo-tag, for instance, since they would be posted with the geo-tag for the home team.