Funny part is. The game already allows you to dodge special attacks would not be to far of a leap to hope the same could be done with normal attacks. The main Problem with this as others have mentioned is the latency of the server updating your position and the game actually displaying everything correctly (ie why this type of thing is normally single player fodder). That being said it would be pretty darn nifty if players could shield each other from aoe attacks. On the flip side of that coin it could add new layers of strategy and skill use if the same were true of the mobs.