Would be nice if you was able to fire weapon while in the sitting animation.
this animation: http://imgur.com/24r60OA .
Dayz standalone has this feature but not arma :/. I was flicking threw animation viewer and saw these animations from FFV, they look pretty nice : http://imgur.com/a/W6P6X. Maybe you could have it were you hold the tactical stance key down and press the sitting button to get to this animation state.
Thanks for reading