You’d have to explain to me how I am segregating anything.
I live in a big county. King County. Every year people in the Red part of the county want to form their own county because they hate Seattle.
But King County is never going to split. Because Seattle, a tiny part of a big county, funds 90% of county expenses, and the anti-Seattle crowd are all virtuous until they realize how much they’d have to pay for their own county roads.
When I hear the Red part of the county threaten to make their own county I say, Do it. You do you. No one is being segregated. No one is moving. The laws hardly change. It’s strictly a matter of adjusting taxation at a more local level based solely on politics. All the laws that really matter— state and federal—are unchanged. But then don’t expect my county to fund your new county’s sewer system.
The league system does the same thing, except instead of dealing with hard infrastructure issues it would deal mostly with social and general welfare programs, including SSA.