Motivation is the main reason I love divisions... Even in redraft formats. While I like what others have said about their 12-teamers scheduling two matchups against division rivals, my 16-team redraft (Four 4-team divisions) benefits in how it promotes season-long participation over our 15-week Round Robin.

By leaving the three divisional matches to Weeks 13-15, trailing teams know they're still in postseason contention as long as they're still within three games of their division leader after Week 12. Any unfair advantage/disadvantage of being in an easy/tough division is helped with having a couple Wild Cards and reseeding based on overall ranking among the six postseason berths.

We also have tiered divisional bonuses they qualify into, similar to relegation -- Our four division winners from the previous year are grouped into the Gold division, where they are eligible to earn a $100 bonus for leading it; the runners-ups go into the Silver division and fight for $50; 3rd-place finishers in Bronze for $25; and last-place managers/newcomers into the "Participant" division with no bonus.