So this is, essentially, Korg's new 'two styles at a time' system, but using two arrangers to achieve it...
If Ketron were to adopt ONE totally new arranger feature that is utterly groundbreaking, following in Korg's footsteps here (I don't see anything proprietary in the ability to run multiple styles simultaneously) would be it...
This one feature is the end of 'style fatigue', it exponentially increases the amount of ROM styles (you can make MANY different sounding styles simply by combining only TWO styles, now extrapolate that to hundreds of styles you can mix and match!😱).
There are quite a few things that Korg's system needs work with (synchronization, integration with the Songbook, picking which intro/ending gets used, and timebase adjustments for things like this, where you are in essence mixing and matching a 3/4 timebase against a 4/4 timebase...
Korg made an amazing leap forward but have failed to capitalize on the potential. Here's Ketron's chance to leap ahead....
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An arranger is just a tool. What matters is what you build with it..!