I would also like something like this, but I imagine it would take a huge amount of work. The calorie intake is modelled pretty well, but to model vitamins and minerals.. as a developer, I shudder to think of it.
It could be simplified with a sort of "varied diet" indicator. If it's low, you have a higher chance of getting sick with a few ailments. Complex dishes would increase it, so you would leave dried meat for hard labour and travels, not as your only-food. While travelling for a long time, you might end up eating a few berries just to keep it up.
This is an extreme simplification, but it would work in giving us a reason to cook those stews and soups (and even a dessert of berries..) instead of just chugging dried meat.