Hmmm...Phoenix Airport.
Let's see what we have. The one thing a hub should not do is make it difficult to get from Flight A to Flight B. A mandatory walk across the airport is not good. I bought spinners so I could get around airports on transfers. That carpet will not let you roll yours easily. The bathrooms are minimal in size. Screens you have to squint at to view arrivals and departures are another underwhelming feature there.
Oh well. Getting liquored up here at the many bars/restaurants is Ground Harbor's one redeeming feature. They do have some decent southwestern faire though.