Good that the experiment was useful. I liked the original corner-oriented placement but as many here suggested the speakers were likely to close to each other for a good stereo image reproduction. I didn't think of it before but the obvious solution was a much bigger TV—one of those 88" 8K models obviously—to force wider spacing but still look logical.
Jokes aside, I've been interested in the corner orientation ever since seeing this great drawing (maybe posted here a while back, maybe Arstechnica but thanks to whoever found it):