Midi control as described would be handy, however, maybe i'm missing something, but could the input gain parameter by controlled to same way as the preset parameters are controlled? ie hotknob values)?

If so, couldn't a post gain parameter be added and controlled in the same manner, this would give us pre and post volume control using an expression pedal.

On a side note, it would also be swell if there was some way to edit the value curve of an expression pedal. something simple like 0.0 volts = hotknob val 0 – 1.0 volts = hotknob val 20 – 5.0 volts = hotknob 100. This would allow us to create a smoother expression curve for whatever expression pedal we are using, i've always wondered why this isn't a standard parameter on digital pedals.