Imagine you build a short phrase (eg. a bass line) that fits a chord sample. Copying the phrase and transposing it with the jog wheel to fit to another chord would be really quick. But it does not work smoothly right now, because the jog wheel transposes chromatically and by doing so moves notes out of scale.
Having a global option to transpose in scale with the jog wheel; just how the pads are limited to a scale.
Transposing one note at a time. But it’s slow, error-prone and kills the creative flow.