2
Do you guys think local only communities should be a thing?
(sh.itjust.works)
Home of the sh.itjust.works instance.
Perhaps you could have a system where you can link different accounts together, as in you have your main account from which you view and post from and a secondary account that just transfers the permission to view and interact with a walled off community. Obviously it would still require you to make a new account and link it but after the initial setup it would be fine.
As to how feasible that would be I have no idea