I think that the evolution should be to take some of the workload away, by making the communities the first line of defence when it comes to moderation.
Personally I believe this is the natural evolution. There will come a time (I have no idea when) where the communities will be the focus of most people. There are more tools available to the communities. They can create their own blacklists and ways to police people who try to spam their sites and bilk rewards.
At that point, Hive is policed by layer 2 moderation. It wont be perfect but it might remove some of the major issues.
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