I Just got off a Delta BE flight, this is what I got: Much nicer bag (subjective, I know) Higher quality socks with rubber feet, better eye mask, earplugs, noname toothbrush with floss and TOOTHPASTE!, Korres Yoghurt Moisturizing Face Cream, Shea Butter Lip Balm, small package of kleenex, Pomegranate breath mints, Pen.
I don't consider the DL kit to be wonderful, but its better than the AF one. Sorry but its poor (again maybe I'm flying with too many Middle Eastern carriers)
I do agree about the new IFE itself. Regarding the headsets, most airlines are quite vigilant in collecting them after flight and have 2 or 3 prong adaptors to discourage theft. I disagree about the food however especially recently where it seems that they have even done away with dessert selection.