Waffle? how to make this geometry?

Unresolved problems;

M11-01.STEP (36.8 KB)

parkur modulu.3dm (204.1 KB)

waffletree-surface.gh (20.9 KB)

Side surfaces can not be included in the waffle system
When the horizontal surfaces are increased, the above opening can not be closed.

I’m not sure I understand the question and I’m really more lika newb, but maybe this helps: