Thanks for the reply Nik, sorry I think I misunderstood the original issue here.
Thank you for clarifying that though, I wasn’t sure if it should be enabled for all rows or not, but that makes sense. Adding a bit of black point adjustment would be certainly useful.
Generally though, I do find the Auto Enhance works pretty well, only a few extra tweaks needed most of the time. As you say though, it does seem to be underexposed images that need the most extra adjustments.