I understand it. The central USA location and terminal layout make it extremely well suited to be UAL's closest near term approximation to ATL or DFW. Yeah, the WX, altitude, and teeny train are why it is unlikely to ever quite match them either. IAD is also well suited to a bigger hub role and can handle short term growth even before the new terminal has broken ground. Growth at our other more constrained hubs will be harder to come by until we get more gates (speaking of which, the new Terminal 1 at EWR is opening very soon with about a dozen UAL gates... but good luck cramming more flights into the airspace).