That you can't take the time to help your team take out any air support and ESPECIALLY UAVs!?
I can't tell you how many times I've gone into a game where all I hear is "enemy UAV" and no one but me tries to destroy them! And I don't even have enough time to take them out before I die or they have like 5 so I have to die multiple times to replenish ammo.
TL;DR Every team I get placed in sucks **** on every level.