PHL Ticket Counter Space
If DL does move over to D, I wonder what'll happen with ticket counter space. Right now, there's just no room for another airline downstairs.
And as much as I enjoy having CO agents service CO flights, the agents at PHL are so horrible (they don't have anything on EWR!) I wouldn't mind another carrier like US taking over their gate/ticket counter work.
(i.e.: agent in Philly last week addressed the handicapped passengers at boarding as "lets get the f'ing cripples onboard now", where she definitely didn't censor her use of the F word there. Also loved it when passengers looked at her with disgust because of her vocabulary and attitude, only to get a "what are you looking at, &itch!" Gotta' love that South Philly lovin'!