That seems fair. Though, personally, as long as it can federate, I am less concerned about p2p. Some very nice features are a lot harder (impossible?) to make

That seems fair. Though, personally, as long as it can federate, I am less concerned about p2p. Some very nice features are a lot harder (impossible?) to make work in a pure p2p setup whereas federation seems to give you the best of both worlds. (AKA the benefits of an always-available server without the vender lock.) That is actually the big thing I don't like about Signal. If Open Wisper Systems decides tomorrow to turn off their server, everyones' Signal client are broke...