After talking with greenboy, there may be some further bracing mods done to the plans. I know that I used the additional bracing that is not in the plans, and further modification may be done later as well.
One of the great things about this design is that it was not rushed out the door to meet the demands of some bean counters. Its been years in the making, and any mods made to the design have only been done after careful consideration. As opposed to an alteration on a build based on a single phone call to a builder where it appears to have been "I don't know what effect it will have on the sound, but I guess that makes sense and it looks better" kind of thing.