Tony, by and large, Yamaha has responded positively to the requests made by both home and pro players. Several months ago I listed many of the requests the acted upon on this and other forums. Yamaha actually posted a thread titled Yamaha Listens.
Obviously, some requests were not acted upon, and the reasons behind this are known to Yamaha only. I suspect some of the requests did not make good business, or economic sense, though. The response overall by Yamaha, over the years, has been positive, and their technical support has been excellent.
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)