As for route changes, I'd expand service to Osaka/Kansai and bring back the Seattle-Osaka flight as a 777. I'd bring back mainline service to my hometown, Wichita with B717s.
Also, I would improve the mediocre service. Especially on long flights to Asia where they have to compete with much better Asian service. PTVs, better food, better seats, better premium class, more legroom in coach perhaps. Keep the good reliability. Perhaps think about remodeling some of MEM.
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