Mad Scotty, that is a good point. How much do you think this kind of arranging was due to the constraints of having either prescribed or traditional "compulsories" such as an off-the-line, drum solo, concert, color presentation, exit, etc.?
While this may not have been true after 1972, I think it took DCI corps a few years at least to begin to stretch themselves after having been in a VFW/AL artistic straitjacket for years. But then again, I am not familiar with the VFW/AL rules.