Not sure how many more hub flights they could add since they connect to almost every bank except SLC. You might get a few point-to-points, but I think this is just a marketing move. DL has always had a strong presence in the community going back to NW and NC. It was very strong for NW--so strong it probably is the smallest market with a Skyclub inherited from NW. It is not out of the ordinary to have three fourths the plane on the upgrade list.

IMHO DL is trying to win a few more HVC that used to fly Frontier/Midwest and keep others from the clutches of WN.