Diki, what you envision is creative, inovative, and well thought out. While I think some of the processes you describe (chord tracking & triggering algorithms)WILL be implemented on non-arranger keyboards, I think the increased complexity of operation will be over the heads of the senior citizens that arrangers are targeted for. Not many 70yr olds are going to buy a high-performance sports car with 8-speed manual transmission. They are going for the comfy sedan with auto everything and voice-recognition GPS nav.

While it would be greatly appreciated by PRO's and OMB's, my guess is that they probably make up no more than 10% of the arranger market.

Furthermore, for the time it would take you to master the instrument you describe (including the MediaStation follow-ons), you could actually learn to play a real instrument.

As much as I like the sound (and weight) of my Nord C1, all the digital crap, including the digital drawbars, is driving me nuts. I'm having to relearn to play a "B3" and man, it ain't easy.

But, truth is, I hope you're right.

chas