[Huwajux]

I think this method for a sniper would work swimmingly.

2 handed, S shoot, D brings up a sniping scope. Shows the scope in the bottom right hand corner. You are immobile when looking through the scope. Instead of that stupid UN method. You guide the vision of what the scope is looking at with the arrow keys. In other words. Hit D, a circle comes up with what the sniper scope is looking at. Move around the map with arrow keys. S to pop a cap in someone's head.

Fortunately this method let's you see your character AND who you are aiming at through the scope. After each shot even the scope turns immobile, for around 1 second. Thus the player noticing he is shot at if you miss. A red dot shows whether you are being shot at. I would make this quite expensive as this is the gun people have been waiting for. Anyway that's my 2 cents of how it should works.
Those of you who have played "Second Sight" should know what I'm talking about.