So I just had a look at this.  And if you remove the expiry then it's basically a nostr event.  We can already do this today with runes/glyphs.  So I will just use that for names, rather than inventing a whole new eco system.  Then set the records using nostr relay network and dnstr.  We'll have to wait 1-2 years for the really good names, but can experiment during that time on testnet and mainnet.

https://docs.ordinaldomains.io/on-chain-data-structure