I believe Tampa, Raleigh, and Nashville are all fine as well. But they haven't always been, and if the league continues locking out every years who knows how long fans will continue to support those teams when there are other things they care about more.
I also think Columbus' biggest problem was taken care of, they were losing big time money because of a terrible lease agreement. But then the city bought the arena and Nationwide bought naming rights instead of owning the place, so now the city AND the team can make money off naming rights and the lease terms are a lot better for the team. Now it's just not being completely terrible and convincing fans that they're worth supporting over Ohio State. That's gonna be the hard part.