The base is scheduled to open next year.
simpleflying.com
Pretty sure they will brother. You must still think of Nashville as a small city but it's huge now nearly 1.5x the population of Atlanta already and growing. The growth in population and the amount of big name companies that have landed in this area is incredible, I get that Atlanta has been the home for a while, remember when the SEC basketball championship wasn't in Nashville?
The city makes logistical sense for most of the SEC and when southwest finishes their campus which should line up with all the new renovations finishing and Delta/other airlines making updates in Nashville to their gates/clubs also in the last year or so I wouldn't be surprised to see the city become a major hub at some point though maybe not to the point of Atlanta as far as Air Travel is concerned.