Also given modern flight systems is it really beyond the software guys to get the flight director to command the ideal rate?
I hope one does not look at the F.D. when rotating. Mk.1 eyeball outside until the horizon disappears about 9 degrees, then inside at the attitude to keep correct rate until what ever the correct target attitude is for your a/c. Climb out of FD yes, rotate on it, no. If the sharp boys could devise an FD with correct rotation rate guidance I'm not sure it would improve piloting skills: see all the threads about inability to do basics and magenta lines and FD's etc. etc.