I must confess, I am a little underwhelmed by Korg's measly 5 button footswitch doohickey. If you think that, at a minimum, you want the Variation/Fill select at your feet, that doesn't leave but the one.

Frankly, I am surprised that none of the manufacturers thinks a 12 button input is a good idea. Imagine something like a Roland FC 200, or a Behringer FCB 1010, but with 12 buttons laid out in a chromatic octave arrangement, and no swell pedals (to keep size down).

Plenty of buttons for full arranger control from the buttons, and as an added bonus, a simple no velocity set of bass pedals if you wanted to kick a bit of bass or hold an ostinato.

Brilliant!