CLE makes no sense as a hub once the merger brought in ORD just like Memphis dropped once NWA merged with DAL. What does make sense is exactly what they are doing, keeping their high yield mainline routes for the Cleveland Clinic and other key businesses.

I'm guessing that one of the reasons that TK will eventually move to a new facility in ORD or IAH is because DEN simply won't have enough traffic in the long term future to get 12,000 pilots to training each year.