If war hoppers were prevented from leaving, they would cause more trouble that if they were allow to leave. (e.g. make his base really easy to 3 star). And they wouldn't even attack.
The other idea about allowing co to fight extra battle can be exploited if the co is a high level member.



There has got to be a way to prevent people from jumping war! Maybe lock down till the war is over? The opt out thing doesn't stop people from leaving just as a war starts!

