Just a thought - I wonder if at some point it would be worth swapping affiliates with the Chi Sox. Charlotte is a bit closer to us and I think NC is theoretically Nats / Os territory. As for the Chicago, the distance is probably a little less to Rochester. I'll guess Charlotte is more of a transportation hub, so it probably is more functional for Chicago. Better weather, too.
I doubt the Sox would be interested. They've deliberately chosen to have their low-A through AAA affiliates in a pretty small area in the southeast: Kannapolis, Winston-Salem, Birmingham, Charlotte. They've had those four teams for 20 years now, which is almost unheard-of stability, especially given what just happened with MiLB.