Downtown Atlanta and Midtown will connect for sure. The outlying clusters will get bigger. Probably a lot like Chicago.
Houston will be about like Chicago.
The big surprise will be Las Vegas, Nashville, and Orlando. Nashville will be like Atlanta now but with more density in the core, Las Vegas will be spread all over the place with little density, Orlando will rival Miami.
Louisville will fade away to the lingering echo of laughter at Museum Plaza. On the other hand, if Museum Plaza doesn't get built or gets redesigned, then they will be about like Charlotte now.
Charlotte will finally get their dream, to be like Atlanta. Just kidding guys. I know that strikes a nerve with Charlotte people, heh heh.