I think most of the people on the BA forum at this point would rave about this email, one that actually lists real improvements, rather than the steady stream of "enhancements" we've become accustomed to (even though many of the ones listed in the email were already known).
As far as the food is concerned, I've flown AA and US for many years in F, and over that time, US food has generally improved, and the meals I had on AA late last year and early this year were nothing special. Hopefully they've recovered from the early Septmeber disasters... Most of my meals in October and November were at least edible though nothing I would pay for in a restaurant. In general US seems much better at breakfast than lunch/dinner.