What will NIP-77 make possible? No duplicates on the timeline?
it will save trillions of bytes of bandwidth. it is like rsync for nostr. the idea of fetching notes you already have will be an ancient concept. this is even more important when you're pulling from multiple relays. right now you download tons of extra stuff for no reason. this fixes that.
I personally dont think it will add anything other than a lot of complexity. But glad people are trying stuff. I think we should split nostr into 2 groups. One trying with very complex negentropy to solve very complex use complex use cases. And the group that wants to use vanilla nostr the simple protocol to solve simple use cases (as we have now).