The ridiculous yellow triangle above your head that is broadcasted to the whole fucking server after someone spams Q... Ever wonder how the jet that's out of site sniped you on Alborz mountain or any other giant map while you're camped in a spot thinking there's no possible way for him to see you...
This is the problem with the game, it is not competitive and in many ways much more casual than any COD game. Do we really need BF4?