Instead of adding new hearthlings through food, wealth etc… There should be a romance system that allows the females to fall in love with the male workers. Eventually having them get pregnant and birth offspring. The females would basically do nothing while they are pregnant. This would increase their hunger and needs. Having to create a home for her and man. They would also want cooked food and items like a comfy bed etc. I think this will add an awesome element to the game. Once they give birth the children are more susceptible to being killed by goblins etc until they mature after a few days. Sounds like a lot but i think it would be cool.