I'd find quite useful and interesting that the Volume pedal could be configured to respond to an exponential curve.
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I'm using the volume pedal in pre and post- stomps position, and often I find the following:
with the pedal completely resting in heel position, I have to move it very little for the amp to start sounding neraly at full volume (just with less gain as, it's post-stomps).
So by adding an exponential curve response, we'd be able to produce more soft and progressive volume swells when using the volume pedal positioned previous to the stack section.