Here's an idea: Ignore it. Whining about whiners is twice as useless. Don't let other people's complaining get in the way of a new feature in the game. If Square Enix deem that rebalancing should happen for duels, so be it. But not wanting more things in game because it might be an eye-sore on the forums is silly. The best you can do is offer suggestions here in order to make it as good a feature that caters to as many people as possible.