Well, I would be happy with a successor to the PSR2000 if it had the following:

Telephone type keypad
All nine sliders for the organ flutes
(Even better - real sliders like Baldwin organs)
A next bank button like the 9000
A bigger and better display with FULL access to the synth
Variable velocity (and touch response) on ALL the voices
Hard disk, CD, floppy, USB and To Host

Asking too much I suppose, though I'll settle for everything except the last one

Bryan