Maybe this will be my next simulation project...
I'm thinking this. 6 week "regular season" consisting of purely divisional games. I'll figure out something to do with the Independents. Maybe work them in where there are less than 7 in a division.
That determines your seeding in 128 team, double elimination tournament. Your seeding holds throughout, except losing from the winners bracket is prioritized over winning from the losers bracket. Better seeded team always hosts
So...
Week 7 - 128 teams play
Week 8 - 128 teams play; 64 winners play each other, 64 losers play each other (32 teams eliminated)
Week 9 - 96 teams play; 32 undefeated teams play each other, 64 1-1 teams play each other (32 teams eliminated)
Week 10 - 64 teams play; 16 undefeated teams play each other, 48 2-1 teams play each other (24 teams eliminated)
Week 11 - 40 teams play; 8 undefeated teams play each other, 32 3-1 teams play each other (16 teams eliminated)
Week 12 - 24 teams play; 4 undefeated teams play each other, 20 4-1 teams play each other (10 teams eliminated)
Week 13 - 14 teams play; 2 undefeated teams get a bye, 12 5-1 teams play each other (6 teams eliminated)
Week 14 - 8 team single-elimination playoff; 2 undefeated teams HOST the two lowest seeded teams; 3-6 and 4-5 play in bowls
Week 15 - Semifinals at bowls
Week 16 - Championship Game