I like the idea of NIP-05 resolving handshake.org domains because then you don't have to change anything about the UX or the flow, clients when noticing a handshake domain just have to add the "hns.to" before the URL and they'll find the json, so for example me.nostr/.well-known/nostr.json just make it hns.to.me.nostr/.well-known/nostr.json and done.

This is idea usually loudly booed because another chain. But it's a pretty frictionless update.