It would be nice to be able to tweak the sweep curve for expression pedals. I really like a linear response for things like volume swells, delay trail madness and so on...but for wah? It just never feels right, even after tweaking a wah setting to sound great. Of course i could get a different pedal just for wah, that has the taper i'm after....but i'd prefer to use the same pedal for different things.
The wah needs to be a little bit like an old fashioned ketchup bottle....not too much, not too much..EVERYTHING The reason for this is that a wah sometimes has to be fast clucking, you're going to get sports injuries if you're trying to play rage against the machine-songs for example....to much movement
I'm thinking either a few logarithmic curves to choose from, or maybe a percentage that sets how much happens from the heel to the middle position, and from the middle to toe position. This could be in the wah-fx settings and doesn't have to be in expression pedal global config.