all sorts of services could be made available for members, in ways only possible in a high trust environment
private conflict mediation & arbitration ("hey robot, who is right")
status-compensated expert consultation ("hey ingroup who can help me with <niche>?")
& much more
hell you could even build a private cryptoeconomy to insulate against external volatility
operate your own infrastructure to hedge against censorship/DoS
effectively this approaches Snow Crash virtual citizenship, which I've long believed is the right model for many things