FYI, I threw together this little comparison:

The top row shows that 4K is an extremely subtle improvement over 1080p with these films. It’s there, but many would be perfectly satisfied with 1080p. The difference at 1080p is little more than grain resolution, and it’s possible that a different 1080p encoder tuning could even retain that. There’s a bigger, but still not huge, drop-off at 720p, so that’s actually still a solid resolution for presenting these reconstructions – basically the grain gets obliterated, but differences in actual image detail are still pretty minor. That’s good news for the other Despecialized films, which are still at 720p, and most of the grain was added at 720p, so it’s not lost in the downscale.

The bottom row shows some more interesting things. The DVD downscale looks, frankly, like crap. And that’s an anamorphic DVD downscale from 2160p that I made, considerably better than the recycled Laserdisc master which is the best thing we have from Lucasfilm. The GOUT would look even worse!

The 4K83 images show two things: first, that I really like the colors of Despecialized (but that’s just a matter of opinion). The other thing it shows is the advantage of using the UHD source over a projection print source. You can see more fine detail in the UHD-based source, even at some lower resolutions, because of the generational loss baked into projection prints.