Considering how good a job you've done on your projects (Star Wars comes to mind), would it be possible for you to document what you do as you go about the process of reworking this film, and include it as a documentary with the film? Because I know when I was flipping through your Star Wars disc, I was a little frustrated because I wanted to know the details, scene-by-scene in some cases, as to where the elements were coming from, the techniques you used, and the sources you used for your work. Your work is fantastic, and I think that documenting your techniques and sources would be really helpful for other people out there that are interesting in trying something like this out, or even just for the sake of curiosity.
Good luck on your project.
Edit:
BTW, on another site dedicated to this movie, I happened to come across a post, which in part read:
Just managed to land a first-gen copy of a Thames TV documentary on Richard Williams done in the early '80s relating to the production of the film that cost me plenty on eBay.
If anybody knows anything about this, I would imagine that OCP would be interested in landing a copy of this.