I don't know about merging NIP-03 or NIP-51 but I think NIP-65 should be kept separate. structurally its similar to NIP-51 but I think it serves a different purpose.
NIP-51 is about users organizing content. and NIP-65 is about how users can find each other on the protocol. They both define "lists" of things, but those lists are used very diffrently
I think kind 10002 is for finding people's kind 1 notes, but I don't think it should be assumed to work for every kind. I may want to publish my music to other sets of relays, my long-form articles to another and so on. I think we should have other relay list kinds for other use cases, even if optional. I am not sure of how exactly.
Hmm, that's an interesting idea. maybe there needs to be a 30002 kind with a "k" tag that can be used to tell everyone else where I publish certain kinds of events. either way I don't think it would go in NIP-51 since they don't serve the same purpose
