I understand your line of reasoning, but that can't happen with the region sheets the way they are. IMHO, the Region sheets should be like the Area sheets, and Region is judged with a 5 man panel. 3 music, 2 marching judges with a max 20 points for each judge, equals 100 points.
To determine the rating at Region we could assign a minimum score (totaled from each judge) for each rating.
I = 90+
II = 80-89
III = 70-79
IV = 60-69
V = 59 and below
And we don't have to use that exact point spread, just used it for an example.