The MAC tinkered with the formatting for several years. IIRC, early in the Dambrot tenure, the top 2 seeds were reserved for the division champions. After realizing it wasn't the 1990s anymore and the West is pretty bad at basketball, they switched to a VERY odd format where the top 2 seeds get BYEs to the semi finals. I believe they determined this gave the top 2 seeds too much of an advantage rest/health wise (Mike Tyson voice: no thit), and that's how we got to where we are at currently.