The stadium issue has been around for 25+ years. The last 10 years at the OB proved that we are just fine with playing in a sub-standard stadium. As much as I loved the OB and it's character, they (collectively between City of Miami and UM) let that place go to crap. It became a safety hazard. I just don't see this stadium thing going anywhere any time soon. We simply have to make the best of it.
As for the "why don't we don't build the stadium with booster, etc." crowd, I would ask, who in the world is going to give $300-$400 million to build a stadium for 6-7 games per season, 40,000 fans per game? Just doesn't make business sense. Sure, you can use it for other things, but there are so many of those already in South Florida, just doesn't seem feasible.