Ability to move villagers to your town

I think it would be sweet to make a feature where you could interact with villagers, gaining their trust and then eventually ask them to move to your own town. This would add a lot more life to a minecraft world, especially the worlds that users make where they have restaurants, homes, shops, etc. that are completely empty. I know I would be more apt to invest in one world rather than start over and over if I could have an interactive town.