Delta was by far my first choice airline to work for, and at the time of my interview they had a lot more bases that are now closed, and there were very few commuters, only the most senior Capts. who were commuting to ATL to the L10-11/Int. to bump up their final average earnings commuted.
BUT...if, in the interview they had told me, "Well, you MUST live in ATL, no commuting, and we are going to close BOS and MIA." I would have gotten up and left and gone to my 3rd round of interviews at American, who by the way, still has both a MIA and BOS base (and DFW and ORD, like Delta had back then) and who still have their retirements!
