How about Roulette?

Carlsen plays the Drawmeister against Caruana and tricks him in the rapid games. Nakamura plays the Drawmeister against Caruana and tricks him in the rapid games. Do you recognize the pattern? Back in 1983 when the candidates match Smyslov vs. Hübner was drawn, the outcome was decided by a roulette ball. Now that is pretty lame one may argue, but it certainly has it’s advantages. Guess what, the Drawmeister becomes risky all of a sudden. If you have a 50% chance to get eliminated you can’t raise your overall chances by drawing games anymore. This may not be an ideal solution for a World Championship, because someone holds the title already, but it should work in regular tournaments.