Well, I just unlocked the UMP-45 for the engineer, so I won't have to worry about unlocks anymore. I don't have any weapons unlocked for recon, but there are a few things I just won't do. I don't smack women around, I don't poke little puppies in the eye, I don't throw sacks of kittens off bridges, and I sure as hell am not cheap or sleazy enough to play as a sniper.
It really sucks when you spawn into a squad of fairy "hide and shoot at people from 2 feet away from allied deployment" pud wacks. You get your arse handed to you in Rush mode, and they never offer any place worth a crap to spawn on. Nothing better than giving a guillie suit wearing sack of duke the "old rubber knife" from behind. Except maybe the Indy 500.