Everyone seems to be thinking of virtual bases in terms of the routes and planes currently in use. It seems to me that virtual bases are another tool the company can use to re-imagine new routes and ways of changing old routes without the cumbersome contract making opening and closing bases so costly.
The c series, with the ability to fly long thin routes could be another tool to re-imagine the way the base structure works.
Right now, lots of flights out of Dfw are on RJ's on longer routes. C series vb to upguage seems to make sense.