Tim, I appreciate your take. Perhaps it's simply a matter of different strokes for different folks (and so on and so on and shoobie doobie doobie) but I absolutely love the four sided bunkers, particularly the squared trenches. I'll look through my photographs for more examples as I routinely notice and photograph them. I think they are more widespread than most believe. The Macdonald, Raynor, Banks triumvirate used them extensively, but I suspect Donald J. Ross did as well. I think they often make a nice juxtaposition with nature and for the same reason I like a straight line along one side of a green as well.
I think Dye is brilliant in his greenside shaping, whether it be bunkers or mounds. I often prefer it to so-called minimalism.
Cheers,
Mike