Just to have traditional dining back on the Eastern trains at even half of what they are serving elsewhere would be most welcome. As has been said many times here,flexible dining is awful and should never have been implemented.Anything is better than what they currently offer...
I'd be happy with roughly half of the menu they offer on Western LD menus. What I think would be really nice is a real breakfast with the usual three egg omlette offering, and a real dinner. Lunch could be largely scaled back. Most eastern trains are only 1 night, so it doesn't need to be too elaborate.