Even though you sometimes have the proclivity to be a tad sarcastic , I must agree with much of your above statements..

I actually did use the chord sequencer (it was on my old E-70), but not a lot....I can see it's value, nevertheless.

Methinks it fell by the wayside because:

1. There wasn't enough interest to warrant keeping it.

2. Part (or maybe, all) of the reason for #1 was, no doubt, the SMF Player...most performers, and entertainers (certainly not real players ) figured, why not just go the extra step, and play Karaoke style over the entire song?...sometimes human nature has a tendency to select the easier path.

The reason I mention Casio's possible new direction, is that their local rep has purchased several old synthesizers from me, and is sort of a "go have a coffee(or tea, in my case) with buddy", and, he has let a few things slip out (perhaps unknowingly...or even scarier, perhaps not) about some sort of "Enhanced Sample System" or ESS...ahhh...maybe it was just the coffee...it was a Tim Horten's Triple Triple which is strong enough to burn the heart out of a small horse, but, like booze, has been known to loosen a person's tongue occasionally. Sometimes the tongue will actually fall out.

Are you getting a lot of use out of your second G-70...is it set up more permanently (studio?)and the other is the roving instrument?