[bdc]

The reason why there's 3 versions on there and a non-subtitled interview is because the release was not yet really finished.
There was so much pressure from fans to release it,CR decided to just release it (after years of postponing) "as is".
Materials seemed to be the main problem (according to Bill Nightmare went way over budget because of bad materials).
The fact that there's no professional interview subs could be because there was no more money left for this release.
Finally fansubbers came to the rescue but that sadly didn't work out in the end it seems.

PS at first they weren't going to include the interview (or only part of it) but they must have decided to just release everything they had in the end.