First, it was a joke, though I am a HUGE fan of an on-campus stadium. However, even I will admit that the new dorm next to Eaton, coupled with the inability to dig down past 6 or 8 feet, have likely killed forever the dream of an on-campus stadium. HOWEVER, if Miami keeps building new dorms AND we were willing to relocate WestLab, you could tear down the Mahoney-Pearson complex (including parking and the cafeteria) and combine that with the empty lot on Granada...
However, I would also point out that the on-campus stadium, in George Merrick's ORIGINAL plan, was going to be where Lake Osceola is. Which, of course, is not actually a lake, it is just a super-widened canal.
Second, there are two perfect sites NEAR the campus. The first is the dirt mall directly north of Magic City Casino. The second involves the 8 square blocks directly east of the Marlins' stadium. Obviously, either one requires vision, money, and some help from City of Miami to write bonds.