I think you could get more "bonus" then fighting with them. I have not been in that situation, but when you are fighting you typically bad mouth each other, and do whatever you can to make each other suffer. In turn the child suffers. My brother fought the battle of his wife's ex and the games he played. Once he sat back and said let him play his games, both the courts and his child seemed to see what was going on. Granted, the games are still played, and his wife does not always win, but the kids sometimes still think the grass is greener on the other side.