In particular how CryTek took the S out of SCAR.
I mean the entire concept of the SCAR and even the real life FN SCAR is for it to be a modular assault rifle with a crapload of options, which it had in the original Crysis.
But now by Crysis 2 it has very poor customization options.
You can't attach a silencer, you can't attach a sniper scope, you can't attach a laser sight, which on a sidenote kinda svcks that you are only allowed to have a laser sight "or" scope/reflex sight on weapons that allow for laser.
For me that was one of the great fun things with the original Crysis, you could customize a weapon to your hearts content.
It also svcks that you are no longer allowed to adjust/customize your weapons at all in multiplayer mid-combat.
And whatever happened to flashlights?
And on a final sidenote, i really miss the Claymores.