That technique is often disputed from what I've seen, and shows a great difference between what people generalize about those who sew "hackysacks" and those who sew "footbags."
Mind you, from the hacks I've seen from general sewers, they usually share the same bleedhole. This is just my observation.
Sharing the same corner hole in pentagons is an argument on cleaniness and how much looser a pentagon can be "broken in" in terms of stitching. Sharing the corner holes of pentagons oftentimes results in a tightness on pentagons, and a weird, but yes sharp, look on pentagons.
However, this is just a remark on technique. I am fine in sewing my pentagons with three stitches on each side, having an even and uniform pattern on each of those sides, and having even "corner hole" placement on those pentagons without sharing them in my sewing path. I just think the way that I described just now in my philosophy of stitching results in a better break-in for a pentagon and whatever, because you are not adding further stress in a particular area when considering the long-term break-in process of a 32 paneled bag.
Anyway, you don't have to listen to what I say. I'm an aesthete when it comes to stitching. It sucks.
