At the end of the day, it's a performance activity. While we grade on excellence, performance has to remember its original goal, which is to entertain.
I watch a lot of Cirque shows. Drum corps has made my eye very keen to lack of uniformity, and there's a ton of that in Cirque. That said, even if my eye catches when the three guys performing backflips off bungee cords were a few inches out of alignment from each other, my brain still registers how awesome this is.
"How awesome this is" must be the crux, and that's why entertaining is and should be the thing that pushes corps into champion status.