I thought about some things:
Let the left-right axis of the mouse be fixed on turning your torso (just like in the mechwarrior-games) and with "a" & "d" turn your whole body around.
The turning-torso is fast and does not involve any foot-movement, the turning-everything would be slow and you would hear it.
When walking you could still use your mouse to turn around if the lower body automatically adjusts to the sight direction of the torso (this could even be a bit later and slower to simulate a more realistic turn-rate when in full running speed).
This is perhaps just a minor thing, but that is what really differentiates a weapon-mod from a whole new thrilling ego-shooter experience.
Let the left-right axis of the mouse be fixed on turning your torso (just like in the mechwarrior-games) and with "a" & "d" turn your whole body around.
The turning-torso is fast and does not involve any foot-movement, the turning-everything would be slow and you would hear it.
When walking you could still use your mouse to turn around if the lower body automatically adjusts to the sight direction of the torso (this could even be a bit later and slower to simulate a more realistic turn-rate when in full running speed).
This is perhaps just a minor thing, but that is what really differentiates a weapon-mod from a whole new thrilling ego-shooter experience.