I think you're allowed one piece of exotic armour AND one exotic gun at any time. My dream piece of body armour would probably be dark blue, and look really sleek, maybe with a small cape that reaches just above my feet. Probably would have a low armour rating, but a low weight rating as well, so I can just run around and wreak havoc, die, and do it again. If it's exotic, it's gotta have some awesome side-effect, so maybe when I die, it will let out an electric discharge, like an EMP that instantly depletes everyone's shields and makes their screen fuzzy for 3 seconds. (Count it out, that's a lot of time in an FPS.)