Sorry budy but its a suvival game must have knifes and its already in the game só why not make this more effective?games like COD Modern warfare have this and Its work very well.
People also complain about "camper" so what have to be donne, take out sniper rifles from the game? i dont think so.
Its all about play style,you dont want to be stabed?
Be more carefull dont rush arround the map pay attention in the surroundings.
You dont want to be sniping? Look for location where the sniper may be and make him pay or just avoid high risk areas.
I think how much more options we have in a game better this game will be and ALL the strategies are valid.