It'd be great to see Akizy and Weyerstrauss slug it out in a game of Fischer chess. I wonder who'd win...

Also, in world championship chess matches you could have two head to head chess variant games in which the player with White gets to choose the type of variant (from the 10 or so most popular variants). This would be 2 games where opening prep would go out the window and it would really sort the men from the boys.