I use Psyko-Audio 5.1 headset, and noticed the enviroment explosions and gunfire is in surround, yet voices are not. So when someones character says they are going for an objective or spotted someone, it is always from the front 2 speakers. Not game destroying like some other bugs, but frustrating and disorienting. I don't expect fading with distance, as you need to hear voices no matter how far across the map usually - but some sort of directionality would have been nice.