Possibly requested before but here goes:
It would have been really really nice to be able to make an envelope curve inside a selected area. Bezier or point-to-point, from left to right.
And this curve would then govern the amount of gain changes or VST3 plug changes or whatever as percentage of the values set in the regular processing boxes.
That way you would be able to apply precise volume swelling or gradual on-/offset of reverb or reverb reduction or an accentuated de-essing in the middle of a selection etc. etc.