Originally Posted by pilot64golfer

DEN and ORD are shrinking as Bus bases. IAH and EWR are growing. This was put out on the Flight Ops News back on the late fall. This was a long term plan. So my guess is that they want to get the base up to the number of bodies they need and then "turn on" the extra flying, rather than let it grow naturally.

It has to do with the Bus being able to do the transcons without removing pax and so they want them based on the "coasts" and let the guppy do the short flying. Just like they announced they are removing the guppy from some of the Hawaii flying and putting more mid-body airplanes on those routes.