If not, this would be great to add, I use it in MAutoDynamicEQ all the time and it's really helpful.
For what it's worth updating the "slope" in MSpectralDynamics with a user-selectable prefilter (again, like in MAutoEqualizer) would also be helpful. I know it's technically possible to draw in a curve, but I'm not that good at freehanding a curve and I'm thinking you already have some well developed, well tested code for all this so...
