I've tried using the ACV on Roland's, but it seems more to me that it is designed for single lines, rather than full chords, but maybe I'm doing something wrong.

I have a workaround for when I'm preparing a style-derived SMF that seems to work OK. I play the backing tracks TWICE... once with BASS INV (onBass) off, and once with it ON (but I play the chords with the voice leading I want, and ignore the bass line being incorrect). I then import BOTH SMF's to Cubase, and select which part I want to play, and combine something out of both. So I can have correct roots in the bass, and still get inversions and voice leading out of the ACC parts.

With the utter silence from Roland for the last few years, I'm not sure that begging for this ability would help much. I am certainly envious of those that have it on their arrangers. I just wonder... do many of you try to take advantage of it?