DMP was the beginning of the end. The XI's used no leather whatsoever and a rubber heat pressed Jumpman like fakes used, instead of a stitched one like all other XI's. It was the first to start this 2pack BS and hikes up the price of each shoe $25-$30. Ever since then JB has been toeing the line more and more each year to see what they can get away with.
I cant stress this enough. I think one of the reasons JB went to using such cheap looking plastic coated leather is not only because its cheaper, but because it doesn't crease as easily. People complained so much about creases that JB figured they could kill 2 birds with one stone.
Real leather is supposed to crease, and crease easily. The nice thing about it is even though it creases easily it still looks nice and the creases are easy to remove. This plastic stuff on the other hand is very resistant to creases but once a crease is set in it is extremely hard to remove. The texture and finish of the stuff just isn't the same.
Additionally... I was saying the other day that I would like to see the large cell PU foams make a return. I know they degrade faster, but they are exponentially more comfortable than the small cell EVA crap they use today.