My justification for the scan is the presence of actual film grain and film stock color attributes. Yes, scans would be awesome for the pieces of this edit that need them, but I’d really like scans for projects like emanswfans.
Sure. There’s that as well. But I really don’t know if it would be worth the tremendous amount of time and energy it takes to clean up a film, for these ones, just to get a bit of grain. Could do a grindhouse version, but these CGI-fests aren’t really the type of film that’s fun to watch that way. At least in my opinion.
As far as color goes, I was under the impression that the HDTV/DVD era ones were in great shape, aside from a couple of strangely pink shots in TPM.
An HD AoTC scan would be useful just to see what other changes can be found. I think there may be more than we know of. Conversely, I suspect that a scan of RoTS would be mostly a waste of resources that could be better spent. The theatrical version (which SD resolution telecines exist of) can be made by putting a single wipe from the blu-ray into the HDTV version. If one really wants to see grain on that film that was shot and distributed digitally, they can always add artificial grain.