To be honest, there's not much on an arranger today that I couldn't have anticipated from my early days... I remember the 'rhythm' boxes, the very first appearance of 'auto' features in the late sixties or early seventies.
But, other than some lights underneath the keys (to guide you on your melody), I sure don't remember ANY audio-visual features... No karaoke players, no 'center cancel' vocal elimination, no synced-up audio/visual slide show...
I can only imagine just how much HARDER that generation of players would have laughed at this box of fluff.
Essentially, this is still a far east product (that probably isn't even taking the far east by storm) being desperately marketed to the west in the forlorn hope of at least making SOME sales back on their investment.. As you say, cassp, it has met with a resounding yawn over here...
I just guess there must be some kind of nurturing spirit out there, that wants to protect these poor, deformed orphans, no matter HOW poorly they work in our society. Me, I'm a little more Darwinian. Survival of WHAT WORKS. This doesn't.
Perhaps, in the 'future', society might change to where this IS a good product, filling a widely held need... I can only hope the earth is 6 ft. over my head by the time that happens...