Let's say trends continue as is. Atlanta and NoVa make Georgia and Virginia blue. At the same time, the Republican Party becomes the party of libertarianism as a new generation of Paulites comes to power. What would an electoral map look like with that type of candidate, one who is libertarian in nature (ie soft on immigration, social issues), vs. a Democrat that is part of the party that evolved to be more far-left, canceling out the supposed revived Solid South?
Georgia and Virginia are unlikely to go Democrat in a normal year if the party moves much to the left.