I second that Ryan would love an audio commentary also....I listened to that radio interview a few times now....
But then it also dawned on me... The Text commentary without writing a book could have a section about the miniatures and sets that were built for this edit which would also be really quite a nice touch also.
I suggest it either starts with this or ends with a section like this and perhaps a personal message (foreword) also.
And a section on 1st and 2nd unit filming.
Just ideas but would be a really nice touch... That PDF was a major part of it at least for me and I am sure others too. but it seems some people did not know it was there. So that needs fixing and make it a clear seperate download companion.