[sdiy] idea for a controller, or does this already exist?

[hichakhok]

..Hi all

a controller idea..

a normal 5 octave  keyboard, where the bottom octave can be set to 
control filters, oscpitch, ring mod ie any mod signals, or any  This 
means you can play with the right hand, and have multiple control over 
simultaneous modulators. I can learn that low c would bend note, c 
sharp bend at a higher rate, d would add res, d sharp remove e add ring 
mod, f increase ring mod lfo rate etc. I could press them all down at 
once, create rhythmic patterns easily by playing figurations etc. With  
knobs its just one at a time, way more real time complexity would be 
offered this way. On a synth like the voyager, the keys could be set to 
modulate between presets (with a defined speed change) (this exists on 
a great softsynth, (symptohm)
We have some amazing modulars around now, but still the problem to me 
is the complexity forces us to wind them up and watch them go. This 
type of keyboard may offer a lot more real time control over multiple 
complex parameters. Knobs are such a waste of fingers. If round knobs 
are such great controllers, how come a knob acoustic instrument was 
never created? Shout me down or point out any way i can add this to my 
modulars..

Would this be  hard to build?

leonm