Because their are advantages to current 'problems', perhaps the right solution is do what the steem white paper suggests, in its crab parable. Let the big boys take down the big boys who rise too quickly or 'cheat'.

In other words, first warn the abuser and ask his motivation, then publish this abuse and last of all 'take them down' kindly. Once they are 'tackled' as in football, do not keep kicking them. Chances are they have something to offer, even if it is just demonstrating system weaknesses.