Lots kinda like an auto level slider.
I think it's designed to be a one touch fix.
The render time does not seem to be optimized.
Makes things look pretty fast by combining a few corrections in one slider. Its not bad when pulling stills.
I don't think it's in the SDK so carrying over from on set is not one click.
Increases render time
Imho RCX should be a solid one light tool with incredible io/XML/support for all grading software and NLEs. That is all it has to excell at. Effects, vignettes, film look, skin tone stuff, not sure this is the best place for that kind of work.