So what can be done to change the incentives so a different Nash equilibrium is selected? Would it be possible to change the professor ranking rules so that th

So what can be done to change the incentives so a different Nash equilibrium is selected? Would it be possible to change the professor ranking rules so that the reviews of cheaters do not count for the average rating? A bounty per cheater caught? These both have their own poor incentives, of course, but brainstorming has to start somewhere.