Making someone feel the heft of a broad sword they just picked up instead of the light daggers they just had. If this type of thing can be pulled off (and I have no doubt with servos and such that it can), immersion will be invaluable to any game.
I'm glad you like it. (Sorry for the late reply. I'm still waiting on the parts to get here from china. T_T So I haven't been to active in this post.)