Let's say someone uses the pristine HD version of the Director's cut as main source, and then:
1) adds the naration where appropriate in the audio;
2) cuts the unicorn scene (that is, separates it) and adds the "original ending" from the best available LD source (since they're daylight scenes for a change, they could be video-enhanced and cleaned, to match the rest as best as possible);
3) allow the end-user to watch either version from the main menu at the beginning - Just like in the case of "The Abyss" and "Independence Day"
It would be sort of similar to the work done on the OT by Metallaxis... except for the branching part.
How feasible is this?
PS: Citizen, any chance will your work be available to the rest of us? It's a great concept.