I don't follow people rationing about PHX future if there's a merger. Remember it's all about market share. And US has the most out of PHX. Sure it doesn't generate the kind of revenue DFW or PHL does, but DAL has a hub in LAX, yet they still plan on maintaing SLC. Why should it be any different with US? PHX would have the least amount of disruptions due to weather than any other hub, and that would help feed off of LAX. It's the 8th largest airport (14th in the world) and has better O&D than CLT. So don't count it out.