As long as you don't want to play louder for some reason (like dynamics or accents, perhaps?)...

I am not a big fan of velocity OR pressure triggered arranger actions. I do not want anything I want to play (on the spur of the moment) to have to be censored by worrying about whether it will trigger an arranger action I don't want.

I still believe that multi-button foot-pedals are the best way to have hands-free control and STILL be able to play anything you want.

And, Ketron... Riff Mode will ALWAYS be redundant until you let the users program the changes themselves, or even better, record it live from the played changes (Chord Sequencer, anyone?). Preset changes get boring very quickly, no matter HOW long the pattern is. You have the START of a really useful feature, but need to consider that most players savvy enough to use it would also rather be able to 'roll their own' changes.

Let's face it... Riff Mode isn't exactly setting the world on fire. ALLOW USER INPUT.... and stand back!