I like the CS dice as is well enough for any martial class. But I agree that it might be nicer to have the characters have a bigger pool and make them encounter recharge so that they function like a stamina system.
Maybe let characters take a round and go totally defensive to get their wind back and regain a dice mid fight if neccesary but other then that let them recharge after fights.
I would also not make them the ONLY way to do things like trip, bullrush, etc though. Just a way to do those things while also hitting the foe. But if you want to just bullrush someone off a bridge or something you should be able to attempt that within the written rules without using a CS dice.
Maybe let characters take a round and go totally defensive to get their wind back and regain a dice mid fight if neccesary but other then that let them recharge after fights.
I would also not make them the ONLY way to do things like trip, bullrush, etc though. Just a way to do those things while also hitting the foe. But if you want to just bullrush someone off a bridge or something you should be able to attempt that within the written rules without using a CS dice.