Bickering about what regional opens a crew base at a particular hub is pointless. Regionals do not own bases or flying. They are assigned the flying by the parent carrier. DFW does not belong to Eagle, just as CLT does not belong to PSA. They are there because thats where AA wants them. Yes, no one is happy with what PSA pilots have agreed to, but where they fly is totally up to the company. They could just as easily put an Eagle base in CLT.

US Airways and AA are now one. Expect to see a shuffle in flying and bases among all regional carriers.