Lets take a look at some division frontage concepts. I am still trying to think through the implications of these. I am groping for a division size that will make sense and look visually attractive.
Four stands on a 3km front.
And 8 stands, ditto.
And here are sample 6-stand divisions in sample formations.
Looking at these, I am warming further to the 4-stand Prussian division, as against a 3-stand French. Definitely have to get some French painted and some scenarios tried out.