It's fantastic, as you say certain things like adding images could be done through p2p so you don't need the service of a third party. I share your idea.
Relay Based Open Communication + P2P Communications... both making progress
Now Holepunch released the documentation https://docs.holepunch.to/
I'm super curious on how both can be used at the same time.. there are things where you don't need relays to participate and you can simply let pure p2p to happen .. for instance.. file transfer.. or p2p video.... so maybe Nostr helps connecting all of it.. and enabling pure p2p on certain things and relay based interaction for other things
Discussion
I hope someone figures it out so we don’t see them as competing solutions but as complementary