fmalover: What details have been lost? Nitpicking is necessary in order to keep me on my toes! ;)
Having just worked through a (almost) shot-by-shot correction of the control room scene, I begin to appreciate the effort it took Harmy to do his correction. And that's only 1/30th of the film! I just compared my version of the scene to Despecialized, and they're not all that different. I bumped up the saturation on the Despecialized playback, and they were quite comparable in many ways. The saturation levels may be the biggest difference between them, other than a slight bluish-green tint on Harmy's version which is very characteristic of the Blu-ray and is remarkably difficult to remove. I may be overzealous in removing it as some of that could be accurate.
You_Too: This project has a similar history. I spent the better part of a year, on and off, working with the problems in the DVD in preparation for the comprehensive work and getting to know the film. Everything has the same seven layers of correction even before I work on individual shots.