I don't understand all of this but sounds like an good way to generate a population of more interesting npc's.

One more job type you might add is mutated or 'eccentric.' In real life there would always be a few individuals who don't fit the pattern. You can generate rare individuals who have one or more states outside of the norm -walks in random circles, spends too much/too little time making love,eating, being aggressive or whatever. Could have a very short life or could start a cult -who knows?