One of the problems is that, with some exceptions, if a restaurant offers take-out at all, they probably offer their whole menu. If I look at the menu for my local Greek pizza place, I can pretty much guarantee you that their pizzas, Veal Parmesan, and salads are going to stand up to take-out (AFAIK you can't get delivery) better than their burgers, meatball subs, or calzones.