The movement to incorporate stadiums into the center of cities vs. out in the wastelands has been a proven boon. Besides being a local economic stimulus, a stadium at Tropical Park for example, would probably have 25,000 people that could WALK to the games, and another 100k that could bike there or take a 10 minute uber or get dropped off easily, plus public transport etc. Vs. practically ZERO at HRS. Of course only a fraction of them will come each week, which is still something, but it would create a boost and a base to build on, and integrate the team (and the school) deeper into the community. It would absolutely attract new fans and create a much more collegiate atmosphere. Anyone who says differently has an agenda or was dropped on their head too many times. That's the proven blueprint.
This doesn't even take into affect how much more convenient it would be for the 34,000 employees and students at the U to attend.
I think we would draw an extra 10k per game once we found our footing (70k-80k more tickets sold per season). Gameday would light up the southern part of Miami, it wouldn't be isolated to an industrial wasteland next to the turnpike like HRH. People would feel it. Each week would be an event with aftershocks that didn't live in a bubble.