Bill,
Korg introduced its first arranger in 1983 and the groundbreaking i3 is from 1993. You can read the complete story here:
Korg Arranger History I think that Korg have had plenty of time to learn what arranger players want. And a lot of arranger players want Korg these days
Kind regards,
Tommy
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Yamaha PSR-S770, Korg Krome 61