Also having a series of quotes either from George himself or people influential in the movies production which reinforce the proper preservation of the theatrical movies might make for a way to push this point. In the (AFI) American Film Institute broadcast of the Tribute to George Lucas was:

"I am very concerned about our national heritage, and I am very concerned that the films that I watched when I was young and the films that I watched throughout my life are preserved, so that my children can see them." -George Lucas"

This was 1980's George. (http://today.msnbc.msn.com/id/5651949/) Not sure him and his organization is of the same opinion when it comes to their film today. The Making of books could be seen as them beginning the process of making the versions we buy equal to some historical archive version, but that's their call.

This quote is useful for swaying public opinion though.