I don't find any tactic to be really cheap. I mean, people complain about people who hide, CQC, and knife kill. Well, be more careful, then. People complain about snipers. Well, don't go out in open areas, then. It's that simple. There is a counter to every tactic.
As far as auto-aim goes, it does give you an advantage, but at a disadvantage, so whatever. If someone wants to auto-aim, that's fine. I don't find many people do, anyway.
As far as random headshots go, when it comes down to it, a good player isn't going to let a bad player get off 10 or 20 shots. They will already be dead.
[quote name='bigl523']QFT. I can't tell you how many times I will get a hs on an enemy and then half a second later he gets a hs on me and we are both dead. So lame.[/quote]
How so? They got their shot off, and it hit you. It stinks, but they earned the kill as much as you did.