I have been thinking on the discussion I had with @`utxo` yesterday evening and @`SGT.FISH` @`WedgeSocial` today regarding the spammer.
I think at the end of the day the best way forward is to encourage more relay operators and allow relay operators freedom of choice as to how how they run their relay and data retention. Ultimately, as I said earlier today to Fish and Dan where I can see the #nostr protocol developing will be similar/combination of how the public and private tracker system works regarding BitTorrent.
Long term, I would like to see a mix of free invite-only relays that whitelist their friends or perhaps provide revokeable badges to make it more tangible?, paid relays, self-hosted relays and free public relays.
In short, we need to encourage more relay operators to strengthen the network and work on user discovery, imo.
Feel free to disagree with this note.