My personal hope is that LGA doesn't get hit too hard, there there are a number of destinations served (primarily by eagle) that seem ripe for schedule reduction (not route cancellation).
I don't think much at JFK is at risk (maybe STN.....)
JFK, LGA, and MIA are not going to see significant cuts. LaGuardia will see zero frequency cuts, though there might be route shuffling.
Miami might see increased service, but that's TBD. Miami's revenue is largely international, and AA needs more of that. It remains an extremely profitable operation, thanks to the Latin/Caribbean services that have extremely low break-even load-factors. Miami-St. Kitts & Nevis, for example, barely averages a year-round 65% loadfactor, but it can break-even at a 40% load.
STN has been doing well; it's definitely not totally immune, but I think people underestimate what a solid performer it has been.