No in wc2 you had to look backward/sidwards to go to the turret cockpit to fire. Im talking about changing your navcomputor to a remote camera facing backwards. Which you could in Wc3 with longbow and i think the thunderbolt. Don't know about wc4 though, as the ps version I played didn't have cockpits.
And judging by some of the recent advances that some of the coders have been playing with, it looks like it will be possible with fs2.
Though the real question is can you switch between damage, weapons, and energy balancing on the left, and target, nav, and turret on the right with the 2 single panels like you could in wc3? I guess they are working on a way.