This is possibly my favorite and also the most well written Extra Punctuation you've written, it was really excellent. As much of a bane to the world's existence Metal Gear Solid is, the third game had a well implemented survival system that did all of the things you spoke of as far as failing to nourish yourself led to bad performance. What added to that even further was that you had to hunt your food from the forest, a lot of which were poisonous snakes and ravenous fish. You were also forced to steal medical supplies from enemy bases so that getting bitten by your potential meal didn't mean death. I can definitely seeing this game being improved by such a mechanic.