Maybe we can crowdsource some possible solutions? Let's create a few tags to be used for community discussions, then we can have STINC's Abuse-Solution team decide on which one is best and donate some money to it.
But let's make sure that nothing happens for at least four months. We need plenty of discussion time.
If only there were options already available to us! Damn you, decentralization! You make internetting so hard!
Every witness should write a position paper with rewards turned on, looking for answers in the community. Maybe someone figure this thing out.