Well, to me it sounds awesome. Imagine being interrupted in combat by a messagebox saying: "You try to counter his blows, but your arm is weakened and your mind dispersed by your body's constant screams for nourishments.", accompanied by a debuff. Then when combat ends, if you defeated the guy: "With a massive effort, you've vanquished your adversary in spite of your hunger. Relieved, you open your backpack and partake in a satisfying meal." A lot of food items are removed from your inventory. If instead you fled combat, the message reads "You decided to retreat and gather your strength before returning to fight once again. As you munch on a tasty (insert random food item from inventory), you think through various strategies for use in the battle ahead." Only one item is removed, and there's no debuff.
I am glad you think it sounds awesome, but actually, what you described sounds like just what
I would find completely "un-immersive". I don't like the idea of a phantom narrator describing to me what I am already watching myself do, and telling "me" how I feel. It would make me feel removed from my character, and wondering where the hell this invisible windbag is.
But anyway, that isn't really the point of the thread, is it? I'm just glad that there's a mod out there that does this, because if someone else comes along looking for the same thing, I have a recommendation now.