I like the idea of adopting different stances. Perhaps one stance utilizes thrusts for piercing type damage while another various swings for slashing type. Since distance is an important aspect of combat, the thrusting stance might give the advantage of attacking from slightly further away while imposing a penalty to damage while slashing is more close-quarters at a bonus to damage. Hell, even defensive stances with penalties to offense for bonuses to parrying.

I'd love to see that kind of versatility, but I'm not banking on it.