@krille @phoenix_r_d We've been having extensive discussions about this in various IETF groups, with both Matrix and XMPP folks. We are very open to either adhering to existing standards or helping shape new ones. Sometimes you have to start fresh though, that's exactly what we did with MLS and MIMI. I don't see why this couldn't be repeated for s c2s protocol. Either way, join the working groups and propose your ideas!