I have been a cardholder of the Platinum Delta Amex since 2009, and with all the changes I'm done with this card and Delta. Since I normally fly on low fares (whether with my company or on my own), all of the changes in the Skymiles program really kill Delta for me now--and therefore the credit card. Even though I stopped doing tons of business with Delta months ago (and started moving to American or metal agnostic), I was considering keeping the Amex Delta card until the mile per dollar scheme was announced for 2015. I have recently dropped from PM to FO as well.

I just don't see the benefit of keeping any of the Delta cards for anyone except for those trying to top up MQMs (on the Platinum or Reserve) and those who check bags frequently on domestic routes but won't make FO (Gold Card). If you want Delta lounge access, it seems like the Amex Platinum with the $200 airline credit is a better deal.

Am I missing something for non high-spend travelers? What's the point in earning miles on a Delta credit card when you can't compliment those earnings as easily/quickly by flying Delta's metal anymore?