Raiki, I think your work is beautiful and of high quality. I appreciate it.
I think the point of starting with OCRs of the original plans to ensure that all necessary detail is preserved. It would be a starting point for the CP updates. Then that set of updated plans would be the starting point for the rewrite. The rewrite would then be the Open-EZ 1.0.
This process has the advantage of transparency but is not without legal difficulty as it would require distributing the copyrighted plans to those working on the project without permission. Perhaps it's not tenable in this forum.
Regardless of how the complete set of plans gets redeveloped, I would like to see end notes for each chapter that detail updates to the plans, if any, and their source. I don't think that the updates necessarily need to come from CP if there are generally recognized best practices that are not in the original plans and not in CP. The Open-EZ plans 1.0 need to be developed in the most transparent way possible. I believe that the more transparency there is in the process, the more confidence in the finished product there will be.