I wish there were a way to disable all L/R adjustments and just have the symmetrical ones. A toggle like "Show Sub Items" (which tends to disable all Headshot parameters btw).

This would get out of the way a lot of less commonly-used sliders in the "Sub Items"

"Asymmetrical (L & R) Morphs" is the toggle title that came to mind. 

I wouldn't do asymmetrical morphs till after I have the symmetrical ones together. I'd like to do all symmetrical morphs quickly and then do any asymmetrical edits.

Apologies if requested before or if I'm missing something.