You're getting to the heart of it now Shearer. CESA is able to attract and retain top coaches from around the area. CESA is able to bring in coaches whereas CSC gets coaches from those already in place in Columbia. As lower said, the only way to do that is to give these "top coaches" several teams. It is impractical to uproot coaches and their families if they only have one team.
CESA has brought in coaches from areas other than Greenville over the last couple of years. I would dare say that Fredricksen, Finotti, Shelley, Fleming, etc... would not come to Greenville if they were not coaching the Premier level teams and only coaching one team at that.
I am baffled to why Crosby does not have a older boys team. Say what you will, the flagship teams of clubs are the older ages and CESA's older boys and girls teams are all manned by coaches with collegiate playing background, licences, experience, and state championships. I think Thad does a decent enough job, but I don't get why the DOC does not have an older team. It is a pretty common practice in clubs for the top coaches to have a older team and a young pool team .