A lot of complainers have bad situational awareness and get killed so much because they can't predict spawns. A la your everyday map complaint. That's not to say that all of the map complaints fall under this category, but it's safe to assume people who aren't good at the game will be more apt to complain about it.
Anyways, getting Diamond Launchers isn't fun anymore so I'm not going to try and get them. The grinding wasn't too bad but a few of the camos are just too situational and I'm tired of running RPG hoping to get a Triple kill or running the SMAW hoping to encounter a Dragonfire. Going to switch to my tryhard MSMC-Stinger-Blackhat class, own the hell out everyone, and enjoy the rest of my last few levels before prestiging for the first time