Is a mostly good copy of this better than what we have already?"
I really hope you haven't given up, Doctor M. To answer your question, for me, ANY copy is better than what I have. Because I have
never seen the film apart from the 3 sing-a-long excerpts. (Zip-A-Dee-Doo-Dah, Everybody has a Lauging Place, and How Do you Do)
So I don't care if it doesn't look that good. I just want a watchable NTSC version. It's sad really that it has been easier for me (and others) to get the Star Wars Holiday Special. (I'm not just talking about this site, I mean from anything.) In fact I'm starting to wonder if more people have seen the special than Song of the South.
I know there was also hope of adding a lot of extra features on a second disc but at this point I'd be happy with just the movie. If there was a burned dvd made, I'd be happy to take whatever is out there now.