This falls under the category of Feature Request - if possible, would be really nice to be able to adjust the Velocity amount for Filter, Amp and Aux envelopes. Currently, appears it is only a binary on/off choice. ON seems to fully scale / multiple the envelope amount 100% by velocity. A lot of the sound design I do usually combines some "hard coded" envelope curve, with a smaller amount of velocity sensitivity. I would almost never set velocity scale to 100% though... most of my patch designs on other instruments use between 5% to 50% velocity > envelope amounts, depending on sound design.
So, if it could be added (as an advanced menu parameter) it would be an awesome addition! 0-100% multiplier between velocity and env amt.