It's great the BD includes some (apparently) never before released outtakes.
I love it when all these years later, some additional footage is found, and we get something new for a film we are quite familiar with.
How many similar footage is probably decaying in some vault, stored away and not to be seen by anybody?
I would love to work on a BD release of an old genre effort, and be able to search for and preserve this little fragments. All these things, be it outtakes/deleted scenes/behind the scenes footage, are perfect testaments of what the film-making experience for that particular title was, something unrepeatable and long gone.