Just composing, right now with OpenMPt, I realize it would be usefull to have an "Amplify" function, in the pattern editor, for "Zxy" values, as it already exists for volume effects (like "Vxy") ;-)
(As it seems to have no effect when you try it on "Zxy" values...Or maybe I missed something again ;-))
Indeed, I use "Zxy" to precisely real-time control "Modwheel", and I sometimes want to keep the progression but with less intensity...That's were "Amplify" would be nice, as in "normal" tracking...