I thought more on the food quality thing. I think one thing the character description are missing is weight - thin to fat. Maybe in addition to just "Better Food", add Sweets or Fattening Diet. Add traits: Anorexic, Glutton. make Better Food guide them to a middle ground, no food selection to lean/thin/gaunt, and Sweets/Fattening Diet lead to Chubby/Fat/Porcine/Corpulent/Obese whichever and however many steps.
Maybe affect T&A size too