A One-Page Ledger Method for Generating Voynich-Like Text

[Dunsel]

Most likely he did not write the whole manuscript before trying to find a buyer for it. The scenario I can imagine is that the sections were written as separate pieces of work, with each piece following on from the success of the previous piece. Then sometime after, and perhaps by someone else, the sections were bound into one book.

But also once his efforts started to get rewards he felt perhaps he could relax his standard and not worry too much about accuracy of the visual content.

I tried to say something about this before. See

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If you look at the chart I posted earlier here: You are not allowed to view links. Register or Login to view.

Your theory could be true. Scribe 1 wrote most of the herbal. Any page not written by Scribe 1 is on a separate sheet that usually wraps the outside of a quire.  And Scribe 1 wrote most of the Baneo section, but not all of it.  Again, Scribe 3 sheets explain the ones not written by Scribe 1.  So, it's entirely possible the book was just herbal and some Baneo to start. 

But, it's not just the conventional sections.  Lisa Fagan Davis has multiple scribes working on the same sections and sometimes, on the same sheet. She stated in her paper that she doesn't believe that the multiple scribes was a temporal variation where one scribe wrote it at multiple times.  Her belief is that it was multiple scribes in perhaps a workshop.  So, you'd have to account for that as well.