Right-o. Your on top of it as I should have assumed from your earlier posts.
My experience is limited to German and Japanese techniques and books on the same, and think that rather than the French taking the drawing methods "further", the traditions diverged based on the architecture and joinery and the material sizes and shapes.
Have you seen the French translation of Manfred Euchner's German book "Manuel des Traits de Charpente" (French title, available from Eyrolles).
I think Lassen's thesis is a good survey of the various techniques.
I'd love to do a timber framing tour of Normandy someday....know anyone who could organize one?
Thanks for the video link.