well actually think of the cost benefits on having a single fleet. Throw in the fact that all of thier pilots fly all three types 200/700/900. The savings in scheduling and maint could be fairly extensive.
The training cost are a wash, the furloughs will mean thier entire company will be in training anyways.
I dont know what the market for a 121 certificate is? Maybe republic wants another one? Compass paid something like 1 million for the ACA cetrificate.