Thanks for posting this, Stephen. Excellent read. To me, the most telling quote was:
"Certain numbers go with certain visuals, and so in many ways, unlike anything the Dead have done before, the visuals determine the set, as well as the length of each particular song, a stricture that would be routine for most bands but which for the Dead is almost unthinkable. Still, they hit their marks. It’s all tightly choreographed ..."
IMHO, as technologically amazing as the Sphere seems to be, it can't equal the old days with the triumvirate of the Dead, Winterland, and good acid.
Bill, tgo