Do you think that Pittsburgh will ever be a hub again (from any airline, not necessarily US [well, US is never coming back, I’m guessing])? Everything is in place for PIT to be a hub again. Because of passenger satisfaction with the airport, I really think it is a mistake for a major airline not to rehub PIT. The airport was designed back in the 80’s as a major hub for connecting passengers, not for regional travel (as it is now).
As it is now, $1,300,000,000 was thrown out the window, because, for what it is being used for, PIT doesn’t need to be anywhere near as big or as nice as it is now with no connecting passengers.