Bill... Hardware arrangers usually trail software, at least in the implementation of new concepts. Is there even any software out there yet which can morph real audio recordings of one chord into another, or modeled guitars that can be controlled with MIDI that are as nuanced as a real one?

The only thing that Ketron seem to be touting for the Audya is the use of time-sliced and pitch stretched audio loops. And, to my knowledge, there isn't anything that can change the internal structure of that recording (maj9 to min9) for instance) in current software.

Nor have I heard a modeled acoustic guitar that rivals an audio recording, yet (the majority of GIGA sets are just chord audio recordings, and they have HUGE file sizes). So it just strikes me you may be looking just a bit TOO far down the pipeline, Bill. What is current software reality may eventually (far too slowly, IMO!) make it's way to arrangers. But expecting groundbreaking features before they even become software realities is a bit optimistic