So what's with the developers not letting us use killer combos of weapons/attachments/perks/equipment? There are still some nice combos (eg engineer and black hat) but what I'm talking about is akimbo & laser sight, LMG & fast mag (quickdraw handle has little effect for that matter) or long barrel and suppressor.
It's stupid- these combos still waste slots, and that's balancing enough. Why have a slot based class system if you can't make some nice combinations of stuff? -.-