I really don’t think mashed potatoes are that good. I argue that any good meal needs to stand on its own, and any food that requires extra sauce, or other additives to make it good are not good enough for a meal.
Id even argue they are not even that good as a side dish, as combine with other food, the best they do is taste like the juice of meat, but more commonly they only add more blandness to whatever your eating, making it less than if eating without mashed potatoes.