For what it is worth, AA recently changed my flight through PHL to a 50 minute connection with a terminal change. I called, asked for a supervisor and they could not have been easier to work with. I explained this was the one and only flight out of PHL and the customer service agent re-routed me through Charlotte with 1 1/2 hour connection time and no change fees. This is my first time flying with AA and the customer service was great.