Yep, this is for sure they way to go ... Important things I think will by anonymity and privacy .. It will be important also high adoption to allow lot of people stay together .. And decentralization, and community based (no single company but community behind) .. I tried different ones , I liked simplex that it is grown a lot ( can own personal servers, works on onion net, e2e encrypted, no account based, group and personal chats, voice and video calls, and many more)