You know, besides all the work that the picture will need on a true Disney restoration... I'm really concerned with how the sound will be handled. Even if it's a temp track, every bit of music in the workprint fits perfectly. The sound effects may need work and I'd imagine the voices would need sweetening. A lot of restorations end up having a lot of unnecessary modifications (like the 5.1 mix made for the Vertigo restoration). On the other hand, there's some 5.1 mixes that are completely true to the original mono track like Snow White's 5.1 track or Warner's excellent 5.1 remix of North by Northwest.
It makes me wonder if Disney would go for a full 5.1 mix. If all the separate voice recordings, music tracks, and effects exist in isolated form, they could create a terrific mix... but I don't want to hear something like Miramax's mix that is completely overblown. Maybe just keeping it mono would be a good idea, although, would Richard Williams intend for the final version to be mono... plain stereo, or even 5.1?
Finally, I'm convinced that the temp music for "One-Eye Dance" and "March of the One-Eyes" is original music from Richard Williams' jazz band. The poor audio quality on the old workprint was too distorted to tell, but with the better fidelity, it really sounds like a small jazz sextet. It's obvious because both tracks are brass and drums only. However, I suspect the opening music during the narration is something composed by Ralph Vaughan Williams. Then, the rest of the music sounds like it's synthesizer. There's also a few sections that sound like classical inserted between parts.
If you can get any confirmation from any of the people you've been contacting to get something concrete, that would be awesome. I'd really love to have the original source music in CD-quality if it's non-original.