I hope the developers read this but it's a long shot...
My major bug with this game is muzzleflash. In short, where is it? People shoot at me and I never see any. This might sound like a minor issue but when someone is sniping your spawnpoint from a hill you really cannot tell where the hell they are, you can just here them and randomly die. You have to scan the whole damn hill with binoculars and look for them because they don't make any flash when firing. Major gameplay killer.
Putting the equipment shacks and spawn points out in the open with little cover is also pretty questionable. I forget how many times my poor little guy has been shot in the head on spawn and when buying something from a terminal.
Excellent character models, animations and skins. No problems here.
Weapon models aren't great. They've obviously been designed for third person and look great slung over the back of your guy but in first person they are lacking polygons and have undetailed skins.
First person mode IS crap. I think you can pretty much blame this on the weapon viewpoint, it sucks (For rifles anyway, which is what you're going to be using). When it's not off screen you can only see a tiny amount of your gun, move it up and get it on there! The generally crappy gun animations also make it boring, stiff with no life to them and the reloads... can't we have nice reloads?
Vehicles drive horribly.