LeoneNut has a point. Nobody has ever put the 70mm mix of ESB on a disc. I know that the 70mm mix isn't available to us, but how hard would it be to re-create this mix, or something similar? Is all/most of the differences available? I don't know what all the differences are, but there has to be a list somewere. I know that some other differences are the voice on Hoth that says "the first transport is away" is a different actor, rumored to be Mark Hamill, and the now infamous "you were lucky to get out of there" to R2 on Dagobah instead of "You were lucky you don't taste very good" was from this mix. There were some other stuff that was from alternate takes as well. I don't know how much of the differences are actually available, though. Jambre Davar's Building Empire has quite a bit of stuff as well.