Obstacles to filling Stadium:
1. Competition from Braves, Falcons, Dawgs and United --- GT can't control any of these. But I personally always cheer against The stupid Braves and Falcons just because they compete with Tech. I loved it when The Falcons choked that Super Bowl. I hope they sell these franchises to another city.
2. GT has too many students that are from out of state (and country), as well as graduates that move to high paying jobs in other states across the country after graduation. GT can control its admissions. But it's unlikely football support will ever play any significant role.
I love going to Tech games. Unlike Athens, Gainesville, FL and other big campuses, I can go to a GT game and get in and out quickly, and not spend the entire day sitting in traffic.