I understand all of that except the DEN part. Why draw down DEN? It networks well for routes within the West that are not up and down the coast. I hardly see DEN and IAH as substitutes for each other.My guess is that EWR and IAD continue as strong international gateways with enough feed to keep the international flights full, CLE gets further downsized (ala STL) and that DEN becomes less important, but escapes being STL'd for the time being. Today's announcements say that Houston will be the largest hub.