Well after experiencing them, I have changed my opinion. They suck!
Just my opinion, yours may be different. I won't go hungry, but it's another step down the mediocre path.
I think we are reverting to the dining rooms of the past.
1st class dining room = premium restaurants
2nd class dining room = MDR
3rd class dining room = Lido
I see myself doing more of the other options to the MDR--probably their goal.