Isn't this just a way to provide a WB feed to markets that have a "WB 100+" cable-only station?
Also, my guess would be they picked the two affiliates they did, due to minimal overlap of syndicated programming with other stations in the new markets receiving these feeds. Surely syndex rules still apply in this situation.
Also, I know the CW is coming soon, but it's quite likely these plans to provide WB to small markets were already in the works long before the CW existed.