_Stevie_: lfo tool is great, but i'd encourage you to try the process of going from here:
to here using lfotool:
Anyway! again lfo tool is great, but What i am talking is very simple and not complex and does not need a GUI. Is a drag up or down on one side of selection (or whatever way or first and last event maybe) and reaper would apply a linear ramp up or down over the existing values in a way that the more the event is near the drag side more maximize/compression is applied.
This is very controllable and predictable way of using existing envelopes and fine ramp them manually.