A big challenge on how to control the fans.
THIS!
How do you do that?
Students aren't going to give a crap about the $500k. They will want to celebrate.
Even if schools put in "barricades", students will get around it so you'll have to do it with additional security (even the effectiveness of that is questionable).
Also, how do you know which games should have extra security in case there is an upset? You can't plan for it 90% of the time when it happens. It's called an upset for a reason. So, do schools have extra security for every game? That would be insanely expensive for a "just in case it happens" event.
I don't see how this will work out but it will be fun watching schools write huge checks for storming the field.