i did a feasibility study on what it would take to get us a stadium when i was in grad school. it cannot happen on campus, primarily because of infrastructure and space.
sunlife and its parking lots sit on 160 acres. say we wanted to reduce everything down by 1/3, that gives us about 106 acres (give or take) to fit our stadium site. we would have to get the state to build a stretch of highway in order to handle stadium traffic. in 2008, highway construction costs were $2.4-6.9 million/lane/mile. so if you go with the median of $4.65 million/lane/mile and build a minimalist 4-lane highway (2 lanes each way), that's $18.6 million/mile of road that the state of florida has to fund, not including having to purchase the existing properties along the path of a proposed highway or the demolition costs needed to make the roads.
our window to build an on-campus stadium closed decades ago. everything between i-95 and coral gables is too developed, as is everything between campus and the 826. as much as i would love to have it, a stadium for a small private school in the middle of a dense urban area is not a justifiable reason to destroy homes and businesses. also, good luck getting the state to even sniff at a $60-70 million+ highway project for it.
if we want a stadium, it's tropical park or nothing.