Node based guitar effects system?

By the looks of it, there seem to be quite a few guitarists on this site, and I wonder if I might have had a decent Idea?

The other day I was thinking, what if you could take something like volume and use it to affect the amount / frequency / pitch of a pedal.
For example: If ou had a ring modulator, passed the volume output [there would be a volume and pitch output, like RGB and alpha in blender] through a greater than pedal, and used it to turn on and of an octave pedal, or a distortion pedal.

I know it’s probably unlikley, as most pedals would need to be re-made for such a function, but maybe it’s something a software effects program could achieve?