Fixed that for you
You can't say they haven't fixed the game when you look at how many knives they have added. You'd have to be a pretty lousy developer to ignore the horrid issues whilst spending time adding a bipod knife, camos, gimmicky weapons and moar DLC.
My current gripe is the horrible pop in of various bits of cover. I can see a gut on the bridge about 200m away but when I aim at him suddenly he is stood behind a car. Never had that issue in bf3. Ever.