Does eigenD support this kind of thing yet? Or is it going to require major amounts of new plumbing?
I'm thinking of things like compressors, but also things like the reaktor effects plugin 'the finger' which takes an audio in which it processes with effects, but also a MIDI in to control the effects. There's no easy way I can see of having a keygroup point its midi output at an FX plugin as opposed to an instrument plugin.