Despite the ridiculous cost overruns (and Seattle voters rejecting it, only to be overridden by the State), Safeco Field has just about paid for itself already. Of course, I'm a baseball fan, so take my primary assessment accordingly.
Certainly, the SoDo area (SOuth of DOwntown) has improved. It was the roof on the damned thing that ran the cost way up, but the "Public Stadium Authority" had its reasons, I suppose.
What about the Vikings?