the sound controller was not on the 5000.
I thought it was quite good.
You could program different combinations and programmable max travel levels of effects independantly in x and y directions, eg pan, filter, reverb, chorus, brightness, dsp and thus adjust different levels of these functions by manipulation at an angle from the vertical or horizontal. Because of the position, it was possible to do this at the same time as using the bend and modulation wheels while playing right hand. It was used to good effect on the WSA synth.
I don't think many owners used it, so they left it out this time... a shame. Maybe people complained because they shifted the ball accidentaly, the sound changed, and they did not know why? Like dynamic accompaniment before, a nice function left off through I guess complaints from people who did not like it? A reset button could take you back to default sound instantly irrespective of where the ball position was.