From my experience, it hasn't changed much but the vast majority of my flying is on AA. From the touchpoints I have, I have a positive perspective. Details:

1) flown US a couple of times (6 segments) and always got upgraded 24 hours out + ;
2) one home in PHL and the system is much broader now + ;
3) booked a couple of SAAver from PHL to MUC, hoping J inventory opens, much easier to get to MUC (and other smaller European cities) from PHL ++

As far as "food" is concerned, I look at all domestic meals as purely a way to stave off hunger and if I want good food, I get it from somewhere else.

I actually think the snack baskets are fine for shorter flights with my only quibble being flights at normal mealtimes when one might not have had a chance to get something. So, just making to the gate for an early AM flight and not having a chance to grab something to take on-board. Similarly, running to catch a flight straight from a client and jumping on an early evening flight.