So right now, there are 30 teams in 6A. 29 are the largest by enrollment, plus Totino-Grace is moved up (and Coon Rapids is moved down despite enrollment.) We won't consider Totino for this argument.
The largest school in 6A, Wayzata (3396), is nearly twice the size of the smallest, Lakeville North (1780).
Park Center, which has enrollment of 1669, not much smaller than Lakeville North, plays Richfield (891) under district scheduling. Also almost twice the size.
I'm sure if I dig, I can find others, but enrollment disparities like the ones you mention already exist. Would you add more classes?