I also want to make note that I too think the downtown area needs to be the focus, however Jax is too damn big and the unfornate truth is that Southside has a large, if not larger, center of professional business than downtown and it's not new. Businesses continue to build here because of the sucess of the pre-existing businesses and the proximity to their clients/vendors and their employees. Because of the sprawl, Southside is right in the middle of most of the major residential communities making the commute for employees relatively the same regardless of what part of town they are coming from. You can't say that about downtown.
CZ mentioned seeing successful build-outs in Charlotte. Just having come back from the Dallas-Fort Worth area, I have seen this phenomenon as well...mostly in the Fort Worth area btw, Dallas is still behind.
Communities like Flower Mound, Bedford, Colleyville, Hurst, North Richland Hills, and the like...even downtown Fort Worth, have built actual towncenters going so far as to move their seat of town government there (3 of the towns I saw had the Courthouse and/or City Hall moved directly into the new town center). They built the centers around thriving businesses and considered traffic patterns, existing housing and general livibility. I could go on and on about the great things I saw, or didn't see in the case of homeless people, in Fort Worth, but I'll leave it alone for now.
The point I'm trying to make is that all of the communities I mentioned above, including the city of Fort Worth, don't add up to the areas that make Jacksonville. It works there because everything is split into it's own entity. We see development on the Southside here and scream about Jax having it's priorities wrong, but would you more than likely wouldn't feel that way if it was the Township of Southside, and downtown probably wouldn't be in the state it's in now if that area was known simply as Jacksonville. In fact, it might generate some jealousy and competition, but what do I know.