Yes, this exchange was very fruitful and @bitking insights are invaluable.
My model values differ slighly from those of last blue square, since I’m still attached to the hex lattice to layout even the microcolumnar structure, both from personal preference and from the belief that it will help quick-compute indexes on roughly circular areas to account for both those dendritic and axonal arbors concerns.
I’ll try to come with details on some of my latest figures with the hex lattice, and specifics of most of the layout, hopefully with a few drawings as well… sorry for the dense walls of text to this point. So thank you @bitking for those figures, discussion, infos, and now for bringing color to this topic 