As a non-drummer, I question why percussion is the only section to get 2 judges.
CG only gets 1 judge, and you can learn a lot more from being close up to the guard (hand placements, feet position, posture, etc.) than you can from observing them from the box ... and yet, they are judged on their presentation from the Box. Yes you can see those things from far enough away (the figure skating analogy applies here), and yet, in the box those judges stay. Same applies for the brass.
Do we maybe over emphasize percussion judging, compared to the other sections of the corps?