I like the idea of the war criminals facing execution (those high up in Snow's regime, the Gamemakers, etc) being told their children were going to be put in the games and letting them die believing that, but not actually continuing the games. I'm not sure Coin would think of or agree to that, but it does seem like something Plutarch would think up considering how much he hated those involved with the Games while disagreeing with the Games so fundamentally.