My experience is that Yamaha only accepts input from influential insiders. They discount feedback from their rank-and-file customers, and don't readily admit it when they're wrong. They don't even document when they've changed certain things, perhaps for fear of being perceived that they got it wrong in the first place. That's my $.02, anyhow. [Edit: they have the arranger market in the U.S., and maybe the bulk of the broader keyboard market sewn up. If you walk into a music store in the U.S. all you see is Yamaha. So why should they change, or do anything to rock the boat?] Good luck!