

Well, in my head “like Briar” is the best thing possible for architecture. Except Briar only synchronizes joined groups.
Perhaps even with some kind of, yes, a digital dead drop, that would synchronize (purging stuff old or not in demand) everything announced by devices passing nearby. Over some low-range radio, like BT.
Asynchronous communication. Because having a real-time connection with any mesh is hard.
Seems weird, but there’s another application of these models that for me doesn’t - to convert, say, usual webpages into webpages with proper semantic markup or something like that. For readability and scraping and what not.
Possibly even to make “self-adjusting” gateways representing, say, a social network webpage as an XMPP service. Or to use PGP for private messages in them. Something like that.
Anyway. Until someone does something like that, and that takes enormous amounts of work and discipline, that’s just blabber.