I was playing with a friend last night, and it got to the point where we were always leading the team in damage done, eliminations, etc.
The problem being, we would be forced to play some kind of support roll as random players refuse to do so. It's a toss up between, do we have enough damage to win the game, or are we able to sustain their push effectively? Frankly, I noticed it was too costly to put one of us on support as we wouldn't have the damage to even be competitive otherwise, though we would play the support classes anyways.
Going to have to setup more consistent GAF groups rather than trying to beat your head against the wall with the random player base.