The DVNR on the 1993 laserdisc master (and, by extension, the GOUT) manifests mainly in heavy motion smearing. It may not be terribly noticeable to you, but to some it's very distracting.

Note that the Dark Jedi "Bonus" set mentioned previously would be the 1981 A New Hope version, though that (and the very first shot, since it's part of the same shot as the crawl) is the only difference content-wise between it and the original 1977 version.

And yeah, crushed blacks does mean loss of detail in dark areas, resulting in a "crunchier" image.

Finally, DJ's V3 GOUT isn't out just yet. He'll be releasing it quite soon, though - check out its thread for more information (I've linked you to the current page, as that will have the most up-to-date information).