Korg Poly800/EX800 Users

OK, just had a very half-baked idea, which I'll just chuck in without 
fully developing  ; )
Has anyone looked at dual-ganging the Y-axis of the joystick with the 
filter cutoff mod?  I'm just thinking that Y controls the MIDI 
"modulation" signal, which with virtual synths I usually assign to 
filter cutoff, so was kinda thinking maybe if you could use both the 
poly's sounds and the VSynth's sounds at the same time, and use the 
joystick's Y-axis to control filter cutoff of both os them...
Maybe a three-position switch on the front panel, to select between 
purely cutoff, purely DCO / VCF modulation, and both at once?

Or if there was a way to change it so the MIDI signal was derived from 
your cutoff-pot, rather than the joystck... with a switch so you can 
reassign it to joystick... (don't know how the joystick pot interacts 
with the MIDI signal, I guess I could check out the schematics, but 
can't be bothered)  ; )

Lee
www.baudalign.com/poly800.html