Well, yeah, with the attitude of the people the way it is in Birmingham, a dome is probably not the best thing. I would love to see the BJCC upgraded and redesigned to be more appealing. An entertainment district would definatly be a plus.
In my opinion, there might not be enough people in the Birmingham area to support a dome. How would you get nearly 8-9% of the population to go and fill it everytime there is something going on. That is almost impossible. Look at the Atlanta Braves, they hardly ever fill a 40,000 - 50,000 seat statium, granted they do have over 100 games a year. The fact is you need people to use the thing to pay for it, and most likely it will not get enough use in Birmingham.