Can Pittsburgh still be considered a major metropolitan area without public transportation to the airport?
In my view, the North Side location for the casino is the second best. The best would be anywhere outside the commonwealth of Pennsylvania.
If the Mellon Arena is the oldest venue in the NHL and has some kind of quirky charm, why not renovate it and turn it into the Fenway Park of hockey? If the eggs are broken, make an omelette (or whatever that expression is).