I would add CMH to that list. Also, STL is still considered a hub by AA.
I would have to disagree about MEM, as it still has a decent presence of mainline flying, as well as a lack of competition. I would have said CLE few months ago, but now CO has announced their expansion. STL is probably a likely candidate, as it is now mostly made up of RJ, prop and MD80 flights. Plus, it is smack dab in between two of AA's large hubs, ORD and DFW.
SNCntry32 From United States of America, joined Jan 2007, 1514 posts, RR: 0 Reply 6, posted (6 years 1 month 3 weeks 3 days 15 hours ago) and read 3501 times:
I will say that MEM is one of my favorite NW hubs. Its old school, no fancy trams to get on to get to one side of the terminal to the next, the people are usually friendly, no fancy video monitors, no fancy voice overs doing announcements, just an old school hub.