It's more likely that that VX returns to PHL than it is that they restart SNA or SJC. But if they do return to PHL, it will likely not be for a few years. Their new planes will most likely be used to restore frequencies to existing routes first. The DAL, LGA, and DCA opportunities arose inconveniently early for them, which prompted cuts to other markets too. If the new planes arriving in 2015 and 2016 are used to launch new routes, they will likely be higher-priority markets (Hawaii comes to mind) before they re-launch PHL.