Fair point about the highlights, I guess it's a matter of which details you think are important and how many of them can be lost before it's considered a problem. I think a lot of the outdoor Hoth shots are all so close to the line to begin with that further brightening just makes a bad situation worse.

Generally speaking I prefer Harmy's version on the brightness front, except I think all of them are too cyan.

EDIT: I think part of the problem is that the Lowry job boosted contrast everywhere, which means more detail is pushed into the murky and bright borderline areas, subject to clipping if you manipulate them much. If you were working from the actual film frames, you may be able to do more adjustments without losing so much detail. Such is the nature of the beast.