I’ve learned from this thread that CLT is dull, smelly & full of workers w fake southern accents.
To me, JFK is the threatened hub. Most of the connection traffic is duplicated 95 miles South. The slots & O&D traffic are valuable but I bet with Delta & JetBlue hubbed there, >75% of the seats have direct competition. Maybe AA sells a few slots to JetBlue in the future to build their European network.