NY/LGA will not change much, just on overlap, which is not that much overlap, they service different cities surprisingly. USAIR goes North, AA goes south and west out of LGA.

PHL will become a focus city I would assume.

ORD might change, that for sure will be interesting.

DCA no change.

MIA will not change.

CLT may shrink slightly, but still serves a strong market and purpose that MIAMI can not.

DFW might see some less domestic traffic, due to PHX.

PHX might shrink slightly, due to DFW domestic overlap, they both can not feed west/midwest domestic only traffic.

LAX may actually grow a bit.

JFK no change.

I do think PHX and PHL will become RJ nests for domestic flying, maybe even DFW.