If you shot out of a real gun, you would know to not put your eye right against the scope. Instead, you should have it further from the scope so the recoil doesn't break your eyesocket. This would add another level of immersion to the game. You should also be able to move your head around to check your surroundings while scoped in. Without the black around the scope, that is possible.
- Legacy ID
This would make the game even more awesome :D
It would require using PIP & rendering 2 images.
They have to scale the outside back which is rendering two different parts of the scenery at a time not to mention if you move it has to change the images, which puts more stress on an already stressed CPU.