Most MMOs offer you the ability to use the environment to your advantage. It's what smart hunting or smart game play is all about. I certainly can see how there is a difference when it comes to a real-cash game, but what baffles me is why MA simply doesn't adjust the AI of the mobs, rather than coming up with solutions that do not make sense, and only end up negatively affecting player's experience. I lost track of the amount of times where a MOB ended up trapping itself for no apparent reason, other than shoddy path finding AI.