The problem is that there are different things you might musically want:
If I have reverb on a track down to zero, and one note in a pattern p-lock’d to mid-reverb… and then I control-all the reverb send to full - what should happen? In this case, probably I want the “max” reverb setting so the p-lock is still at it’s setting until the control-all goes beyond…
If I have a track with a few notes p-locked to a different longer note lengths, and control-all the length down - so I want them all immediately clipped? do I want them scaled?
Sometimes I want the max of the (control-all, p-lock) effect… sometimes I want control-all to overrride, sometimes I want the p-lock’d value scaled.
I suppose I’m okay with e. picking one interpretation over the others in the names of quick-easy-fast. Seems like it would bring a lot of complexity to be able to specify per-parameter? per-track? per-plock? how the value should interact w.r.t. control-all.