DFW-OAK, or CLT-HOU?
With AA now serving OAK, would it likely consider DFW-OAK to augment and complement it's position with the inherited PHX-OAK? DFW-OAK would be a close equivalent to WN's recent new addition of DAL-OAK also. CLT-HOU is only flown by WN. AA only flies CLT-IAH, however, as US was a Star Alliance partner where US didn't service HOU or MDW, but AA already services HOU through DFW-HOU. Maybe a CLT-HOU would provide complementary coverage.
As DFW and CLT are AA's largest hubs with CLT being viewed as a fortress hub, I've thought the AA would match WN's routes into these markets on these routes, but so far it hasn't.
Does HOU offer a preference for some passengers in Houston over IAH or are these airports too close to be different enough for preference?