I would like to participate, it is something I have been trying for months (a consensus).
On the other hand, I don't think we should set up something sophisticated, but rather base ourselves on what is already there, NIP98, NIP05, NIP94, NIP51, to adapt our services. We have to use ephemeral notes to communicate some things and normal notes for others, I don't see any more complication. I have applied this philosophy in my API with the intention that people can implement it themselves, do forks, etc.