pjv on Nostr: I think Mike Dilger has already embarked down the rabbit hole of building his own ...

I think Mike Dilger (npub1acg…p35c) has already embarked down the rabbit hole of building his own personal relay, but to circle back, I think what would fulfill the original request would be a way to limit public (un-authed) event reads to only those events authored by white-listed pubkeys.

And then, yeah, there would have to be a way for the white-listed pubkeys to be able to auth on the relay and be able to subscribe to (read) all events, including those written by non-white-listed pubkeys (who are allowed [by my write policy plugin anyway] to write events that include white-listed pubkeys in the event tags).