Currently we have walking with your weapon up, and the tactical pace, in which you move faster and still your are able to shoot.

What I propose is the ability to use the combat pace for sprinting, resulting in a fast movement, while still being able to fire your weapon without aiming at all, for using it when you need to advance very fast and still need to fire at a general direction.

It would work only for some seconds, like sprinting, and after that you would come back to combat pace.