And yet, strangely, Yamaha, Roland, Ketron, Wersi, even Lionstracs ALL think that you need more than two fills for a four Variation arranger...

Perhaps you don't have a 'problem' with it because you have no choice?

Me, I don't have a 'problem' with no Break/Fills on the Roland. I have worked out a couple of workarounds (hit Break, THEN hit Fill - easy with a footswitch pedal - instant Break/Fill!). But it doesn't mean I wouldn't LIKE one (or four!). There's NO workaround for the lack of four fills on the Korg. And yet, you are happy with it?

Sounds more like defensiveness to me. I don't mind admitting the weaknesses in my G70. And strive to make workarounds for them. But when workarounds don't exist, I'll bitch and moan as good as anyone. Why are you so happy with 66% fewer fills than the competition? I've played a PA2xpro, and the FIRST thing I noticed was how jumpy some of the transitions were, compared to Roland and Yamaha...