Yamaha Arrangers and Workstations have a high level of quality and reliability. Never had an issue with my Tyros 3 or Motif XF.
Check out the Motif Forum. Very rarely is there a post about a problem and if there is most of the time it's Operator error or not understanding the product.

Yes, the better question is what would say to the top R&D person?
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joesax
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https://music4stressedoutsouls.bandcamp.com/
Tyros 3, Motif XF6, Quad Amp/Pre-Amp/DAC, Quad Monitors, Tascam Digital Recorder