Rok, you are beating down some of the shit I've been waiting to see others discuss. You are touching onto the abilities of decentralization in ways much beyond how many simply see currency and identities. I love what you call this concept: "A Decentralized Mixed-Reality Justice Army" because that is exactly what I think it will be. 

The biggest revolutions are not coming from blockchains. The incentive and anonymity structures offered by decenteralized economics are going to enable new types of governments and oversight. Prediction markets and a futarchy style government could could be mind boggling. 

Will decentralization allow a vigilante society to prosper? I know these ideas are seeded; people like Robin Hanson have been thinking about them for a while now - now is the time when the technology is catching up. 

Great post.