Song was the best part of Delta. Adding in a First Class cabin can't be a good thing on former Song flights, since in order to induce people to pay for First Class, they are gonna have to make regular economy class worse, the way they do on the regular legacy carriers anyway. Frankly, I prefer flying Song to flying Delta First Class, but then again, I am usually too frugal to pay for first class anyway (and my employer is even more frugal - or should I say, cheap). Of course, for the record, I have paid as much as $700 round-trip per ticket on Song (BOS-MCO) for ideal flight times during April break.
Now, if they are gonna make regular Delta economy more like a Song flight, just with a first class cabin, well then we might have some brand-loyalty continuing. I'll miss the squiggle on the tail, the cute uniforms and Orange and Green decor (DS's favorite colors). I hope that they can continue the grat customer service culture they seem to have developed on Song; whether over the phone or in the sky, the service has always been superb, even when things were really crowded. But if Delta goes for the Song service model, just with a first class cabin besides, then we might stick with them. Otherwise, we'll be jetBlue all the way.