My view on the operational issues is this. At this point PHL is being operated with two strategies to capture traffic. On the one hand you have a domestic/international network that is supported by a high # of O&D passengers, on the other you have a high # of flights were PHL is used as a connection point. Given PHL's infrastructure all of these flights lead to inevitable gridlock. Why not shift some of the PHL flights supporting connecting passengers to PIT? The best way to leverage the airport assets that US Airways has is to use them the way they were intended. Does PIT go back to 500 flights/day? No, but I could definitely see 300-350. Who knows, if PHL can be optimized to run the "right" # of flights the shift may pay for itself?