We can easily turn the tree into Nostr events if there is demand for that, but I can't imagine that happening.
It works already with the Nostr-based invites that is integrated into https://flotilla.social, 
and 
you get an invite code which is a Nostr event and you can later publish a Nostr event to get admitted into the relay.
Jumble
A user-friendly Nostr client for exploring relay feeds
Fevela
A user-friendly Nostr client for exploring relay feeds
