Sanderxpander
Well yes you COULD use clip gain to regulate the drive to distortion and compression more but that strikes me as a rather specific/unique use for it.
Well it strikes me that way, too
After all, if you want to automate clip gain to drive distortion/compression you could just as easily automate the gain on your distortion/compression plugin.
True, but if you want to try a different amp, you can't always assume the drive control will be mapped the same way.
I dare say it's not so strange to want to use clip gain to even out clip levels and track volume automation for volume automation.
Not strange at all, I just happen to prefer making destructive edits for the practical reason cited above re: exporting, and because when I use it as described for touch-ups with normalization and key commands, I can do it faster.
There's also a more abstract reason; if something needs to be changed, I like to bake it into the track. The fewer audio elements that are dependent on a particular DAW, the more transportable it will be if you have to open it up in something else, or re-visit it years later. Having been in this business a long time, I realize I should have made this a priority much longer ago. Live and learn...for example I also render all my Melodyne tracks after making any changes, and convert soft synths to audio.
Melodyne is an interesting choice, I should try it more often for these duties. It's not always just a vocal though, and not always on a per note basis, so again the use is pretty specific.
Percussive mode is very different. It's also what allows you to transpose entire chords, even if you're only using Essential. Based on your description of how you like to work, I think you might find Melodyne "the best of all worlds."