|Seth Gipson RPG Venture-Captain, Illinois—Carbondale aka Disturbed1|
Its most likely a combination of population density, number of venues, geographic, and more.
Southern Illinois isnt a terribly populous region to oversee, but it stretches out quite a bit between locations, and if things were going well in an area I couldnt oversee personally most of the time, I would likely be requesting a VL for the specific area of the region.
However, different VOs do it different ways, I imagine. I likely want to handle it that way because thats how Bob handled it with me (He was VC of Central/Southern IL, I was VL) before Kristen and I were promoted to VC. He handled the middle of the state, and I took the southern end.