I just thought about the cockpit view and the animation of the driver, or to be precisely the drivers hands!
I just got flashed by a "serious" problem: when you use manual transition...and shift a gear on your driving wheel: am I right that the animation of the hand going down to the gear shift can only start, right after you have give the input to your controller, resulting in a big delay of the gear shift action on screen - or is there an easy work around to this problem I am overlooking at the moment!?
I believe, just like it was in Prologue, the shifting (animation) is predicted by the rev counter. As it increases and reaching redline, you can see the hand leaving the steering wheel to upshift regardless of your input (and vice-versa for downshifting). Of course, if you short-shift, there will be a delay.
Perhaps one way to sync your input to that on the screen (including when you drive hand-free) is through motion detector- PSEye, for example since head detection is already promised for GT5. I just don't think it's as important.