Those Gayfers building renderings are great! I was walking by that area during Mardi Gras and something like that would be an awesome addition. Again, with all this residential development there needs to be development in commercial (including grocery stores) that goes hand in hand.
I've found two interesting plans about transportation on urbanplanet that involve a big improvement for the Mobile metro area.
One is a high-speed rail system in the southeast. The USDOT has a map that shows routes that are in the planning progress.

full map link:
http://upload.wikimedia.org/wikipedia/commons/e/e0/High-Speed_Rail_Corridor_Designations.png
Also, a non-profit organization has a map of proposed and future interstates around the southeast:

Link:
http://www.i-dots.info/I_DOTS.gif