I remember it was once planned to have C-3PO sound like a used car salesman. If they made an even newer version of the special editions and dubbed in Danny DeVito as the voice of C-3PO, I wouldn’t care if it more closely matched what was originally planned.
So even if they find some sort of note where Lucas once pondered midichlorians, I wouldn’t care. It no more legitimizes the concept than an early drawing of Yoda or Jabba should prompt additional revisions. Lucas had some bad ideas around the time of the prequels and special editions. I will always appreciate and admire what he accomplished and everything he has done for cinema and the greatest franchise of all time, but I am also glad he sold Lucasfilm.
This sort of thing does make me less interested in any sort of newer making-of documentaries or books being made now. If I want to check out Star Wars being made, I’ll watch Empire of Dreams or SP FX: The Empire Strikes Back.
Lucas deserves a lot of credit for all he has done, but he certainly didn’t create it all alone. People like John Williams, Ralph McQuarrie, Dennis Muren, John Dykstra, Irvin Kershner, Lawrence Kasdan, Ben Burtt, Marcia Lucas, Alan Ladd Jr. and others also had a lot to do with creating this franchise. They aren’t just laborers to the vision of Lucas. They each put something of themselves into Star Wars and it wouldn’t be the same without them. I think they deserve more credit than they usually receive.
In my opinion, the Original Trilogy appears to be the product of a group of people led by George Lucas working together to make something special, while the prequels and special editions were the product of employees following orders. Just my $0.02