So I had an idea for another stat: How about "Intuition?" When playing as a character with high Intuition, hints would show up faster and more prominently than a character with low Intuition. If you were to add him (which I really hope you do), I could imagine Oken as a character with high Intuition, where Scott could have fairly low intuition.
Also I feel like this game would lend itself well to modded characters and foods: you could simply have "custom characters" and "custom foods" folders, and make it so the user would have to create a folder with a file for stats, and a folder for weight stages (for characters) and an image for custom foods. The game is simple enough that I feel like it would lwnd itself well to that.