For some reason you seem to be forcing the "KF is an epitome of teamwork" thing. It shouldn't be like this simply because your enjoyment will rely on your teammates. Knowing online communities you'll only get an enjoyable game only one out of a hundred times.
Truth, I hated playing online. Most people just wanted to play as a social gathering or they were just bad and did things to ruin the game on purpose. Although this is more of a widespread problem in general when it comes to online games.
All that to say I would hate if the only way to kill anything was with a focused team.