I know in other sports it is not uncommon for regionals to be
played on campus sites. U of Texas has hosted a baseball regional the last
15 years.  In fact men's basketball is the only sport I think of off the
top of my head that the entire tournment is played at "neutral sites."  I
use the term neutral sites very loosly because look how often Indiana
seems to play near Bloomington.
        As for why Munn over Yost I think that there is a very simple
explination.  No offense to any Michigan fans, but Munn is a nicer
building.  Besides I think it seats more than Yost.
 
David