I think @Terry still wants to use exposure to set the middle grey. He mentioned that he’s using filmic’s middle grey slider to fine tune.
In my edits, in fact, I start with exposure and set it to middle grey.
But after enabling other modules above (below filmic), sometimes what I decided to be middle grey seems to change. In this case, I use color calibration perceptual brilliance grading to add punch, and/or tweak filmic’s white/black relative exposure / dynamic range scaling to get back the “correct exposure” (what I think is middle grey in a given photo), or even create a new exposure instance and move it right below filmic.
(Not sure if this late discussion on exposure X middle grey in filmic should be split into another thread…)