An MP match where you don't kill starting city?

[BigJMoney]

Hey I was wondering if anyone had ever tried this before:

What about an MP game where there is the rule that you aren't allowed to completely wipe out a player by capturing their starting city? You can besiege it until they sign a capitulation agreement, but you must leave and are never again allowed to besiege this city unless they break their agreement.

The capitulation agreement can be anything. The only rule is that both players must agree. Once they do it becomes final and public so it can be enforced. If it's broken by the loser, the winner is allowed to besiege him again. If it's not broken, the winner is not allowed by house rule to invade his home region again. Players breaking the house rule would be booted from the game.

Could that be fun? I think it could be maybe, but only if the capitulation agreements are interesting.

-- John