We'd get the same response from the MMA as you would with the IEEE-1394 association, TP...

And, I'm sorry, but anyone that excuses the inability to operate two arrangers AS ONE by saying the second one adds in a bunch of extra sounds (but you have to call them up independently) is kind of missing the point. ANY of us can put two different arrangers, or an arranger and a WS, synth, whatever, next to each other and have that... But we also double our housekeeping, calling each one up individually to do what it needs. Imagine calling ONE registration on one arranger, and it calling the right registration up on the other arranger... then the Parts that sound best on one arranger get played, and its' weak Parts get muted, and the same on the other arranger...

Then, when you call for a Fill and want to go to Variation4 on one arranger, the other does the same...

Nirvana..!

As opposed to the current nightmare of trying to get two arrangers to operate as one we currently have.