And the 2.5 multiplier and the MC situation are two different beasts too.
The situation with MC (and Loyola the last few years) is proof of the need for an "open class."
The 2.5 multiplier would be to help 2A-6A public schools so Byron and Morris don't run into Montini and Antioch doesn't run into whatever 5A/6A private power.in the playoffs. Although it doesn't really help the 6A schools that much as it would just push 7A public schools down to 6A.
The real answer is open class. Let MC, LWE, LA, ESL, BR, Oswego, Naz, and Batavia go at it in an open class. Maybe double that 8 to a total of 16.
In a perfect world, then you take the remaining 7 classes and instead of grouping them by enrollment, group them by maxpreps/massey/whatever algorithm or committee eye test. Top 32 in 7A, next 32 in 6A. So maybe Providence plays in 6A with Byron, Rochester, Montini, and Oswego East.
5A can be for Morris, Metamora, Simeon, St. Pat's, etc.
4A can be for Lena-Winslow, Bishop Mac, Plainfield East, Wauconda, etc.
And 1A would be for the weakest teams who snuck into the postseason. All of that doesn't eliminate the blowout and parity problems, but it sure does cut them at least in half.