I kept them mostly for visual reasons
Could you go with solid hatch outlines, and then a smaller center porthole (maybe 4-6" in diameter) and get the interest you're looking for? I think having 8 hatches is silly, too, but it was the historical proposal for whatever silly reason.Yeah they do look pretty cool.
I actually don't know where I got them, they're not originally my images. They're possibly from the depths of some NSF thread on Big G. The report is titled "Report H321" at the tops of the images: