DraconisTheWyvern btw I did not have design questions just experimenting and posting my experiments.
You are doing tests to get answers to design.
Dibs Trying to get more surface is mostly pointless with the way things are all rectangle builds. The only additional surface you can get are side walls meaning things have to be deeply staggered. This diminishes arcs, range and require turrets. You basically always end up with spiky pyramids or inner walls. Diagonals aren't any better in this regard. They only allow better density via diagonal silhouette / facing.
The gains are largest at small scale. So yeah it's too little to make much of a difference to a wall.