About the 'good' average.
I've not noticed these hacks. It's still incredible fun, barring the <insert swear word> campers. I was on Strike (I think it's Strike, loads of hangers?) and basically there was one in each of the hangers.
Cowards.
Take it from a guy who's played the game more than just about anyone in here, except maybe James. Everybody camps sometimes. If you call me a camper, very good chance that I was camping.

But again, everybody camps sometimes, and when I hear "x&@!ing campers!" in a team deathmatch situation, it is a misunderstanding most of the time, and/or I saw the same guy camping more than couple of times himself. Also, if you kill the same guy twice from a cover, or in a same building, be prepared to get called out you yourself. You may not camp much, but they don't know that.
Map with the hangars, you are probably talking about the Countdown map(missile base?). Camping is irrelevant on that map, and people spawn inside there as well.
Final example, let me tell you about the game I had on Crossfire(lot of camping on this map) last night. I either camped, or paced my game to play defensively. Unfortunately for us, I was the only guy on my team who did this. On the other team, just about everyone played like I did. When the stats came up at the end of the game, I was something like 26 kills, some assists + 4 deaths. Rest of the team? Most of them, most of them finished single digits kills, and double digit deaths. Not one of my teammate had double digit kills, or more kills than deaths. They kept on charging, but IMO, it's not cowardly to know your limitations.

Not that I encounter game like this all the time, but I encounter this type of run 'n' gunners all the time. At certain point, you pretty much start helping out the opposing team more than your own.
I'm amused whenever I hear people calling out the campers, don't get me wrong, I do it too.

But it's like calling out the speeders on a freeway. Everybody speeds, and if you are not speeding, you are just in other people's way!