I agree, every drawing I've seen of this ship is crude and lacking in detail. I truly suspect it was just a design study and was never really fleshed out. The armor on this design was paper-thin which leads me to believe it was not a serious design but just a starting point...
The drawings that
YOU have seen, this does not mean that you have seen
ALL existing drawings .
Before criticizing, you need to know
Severals
DETAILED PLANS for the 2 majors variants of the 37000 tons battlecruiser designs make it clear that these were more than just "preliminary sketches", during late 1920s, the French Naval staff clearly felt the need to be in a position to procedd quickly with orders for the ships should be political situation demand it....