Sounds totally awesome! I look forward to seeing the additions over time. I was not aware of getting a game over due to lack of food, since all that happens is I get the foraging pop up and have to deal with any outcome of that. Early on that can mean having to submit to some things that can rapidly deplete your purity and dignity. Later, with all the Dryads I run into (almost as common as the goblins) as well as the Food Cache's, it is rare I have to forage even as an Orcblood and once I get a few ranks in the perk for it, it is almost always a positive outcome. I must have been very very lucky in the 10+ hours playing from the sounds of it.
It's increasingly likely the more you bottom out in food that the resulting encounter will give you a game over - the food clock is the primary reason you can't grind forever (which is why it's frustrating whenever people ask for more sources of unlimited food). Now that the final boss is in, the balance will be tweaked so that you'll need to play well to have enough food to reach and defeat them.
So I had an idea after revisiting the game and this original comment of mine. With Food playing such an integral role in the late game stages as well as potential for causing early game mischief perhaps a Food Regen power up? Not one you get in game as loot but rather used via the "power up" menu at the start of a new game? If 1/2 food integers are possible in the background, have levels of .5, 1, and 1.5 food regen per round. Then place the cost of such at double the normal, so .5 regen would cost you 2 of your points, 1.5 would cost you 6. That would be the same as maxed out ranks on any two other stats such as Feats and Attributes. If that isn't enough, you could even move it to triple cost. It would add additional food use mitigation for those that really really want it while also keeping it balanced and not a true unlimited source of food.
Granted this idea is purely based on the idea that when you move the game checks for zero food PRIOR to any interaction that could add food or that if you have a total consumption greater than available it will still result in the zero food event.