If Delta's JFK operations were taken out of the picture, I wonder how the numbers would look.
I'd be willing to bet a large source of the complaints, mishandled luggage, etc., revolves around JFK.
I've flown quite a few BIS miles with DL/NW lately and have made a total of three complaints and three compliments this year. Of the complaints, two of them revolved around JFK.
With respect to the compliments, one was specific to a couple of outstanding employees here at SDF. The other two compliments went to CVG based flight crews.
Sadly, its ashame DL is slowly de-hubbing CVG as I feel it's the best hub with the best employees in the original DL system. Many of the trips I would route via CVG in the past I am now routing via other hubs to avoid the CRJ's that plague many, once mainline, routes at CVG.