I agree, as it seems most of the game mechanics and ways to achieve victory are heavily tipped towards warmongering. There's almost no incentive to play peaceful other than if you want to challenge yourself. Coupled with Lebensbraum citadel bombing becomes too gamey for my taste. I like the idea of being able to "buy back" your tiles stolen via citadels. Another idea I've seen in a different thread is to give warmonger penalties when stealing tiles of another civ. Would it be possible to reduce the rate of GG/GA acquisition through a World Congress resolution? Attaching it to Global Peace Accords would make sense imo.