Here's why.

Not all divisions have an equal number of unmanaged teams. Many have none, some have two or even three. With the unbalanced schedule, it's already a huge advantage to have an unmanaged team in your division, but it'd be even bigger if you had ten extra home games versus each unmanaged team. Those extra "home" games could be the difference in a wildcard berth or home field advantage come playoff time. Plus, you'd be having more fun than teams without unmanaged opponents in their division.