see you auntie said:

Q: Was there any thought given to archiving previous tracks like the 6-track master from the 70mm prints or the 78 mono remix? Any thought given to putting them on the Blu-ray?

A: Yes, we have those and they’ve all been digitized. I don’t know if they considered putting those on the Blu-ray. That might be more of a question for Marketing, it may be an issue of space. It’s funny because I play those other audio tracks, like the scene when R2 and C3PO have been left on Tatooine and they walk through the canyon. I just love that on the current mix, you can actually hear the quiet, when R2 is lonely, going through the canyon. I played the original mix and it’s FULL of hiss and totally brittle, so it’s fun now to hear it like George wanted it to really be, what was intended.

A question for marketing, really? You can't put the original fucking mixes on these discs because either the sound will drop out for scenes at a time or go severely out of sync because the original cuts of the film are not there to go with them.

Exactly, why even ask such a stupid question in the first place when they know the films aren't even included in the set.

Nice to hear that all the original tracks are digitized though, now you just have to do the same with the picture for all the films Lucas, it's not impossible, it's done all the time on other films except yours.