In order for CLT to be de-hubbed, the new AA will have to shift a lot of that traffic through somewhere else. It really can't be done at PHL unless they want to really increase the flight delays there. And MIA is too far south to be a domestic hub for any traffic outside of FL. I see the new airline moving passengers around domestically mainly via DFW, ORD, and CLT. I do think CLT may see some overall flight reductions because of re-allignments in the network. I also think that ORD will see more flights, at the expense of PHL (mainly for east-west traffic). The one hub at most risk IMO is PHX, not CLT.