Hi
As someone who plays a number of different organs, this is an interesting issue. I find in practice that, as long as the pedalboard is somewhere near "correct" (i.e.D under D) in position, then there are few problems. Different pedal compass, and flat pedal boards, especially if not centred, make life interesting.
I personally prefer the Victorian straight, concave style of pedalboard to the RCO/AGO design; and I also like manuals relatively close together to facilitate thumbing, etc. - and drawstops rather than tabs any day!
Every Blessing
Tony