So is anything more going to be done with NPCs, as of now villages are more like a mini biome that spawn man-shaped cows.
Jeb has said he will be adding more features to them, possibly making the generation of their villages more "smart" and then adding features to the villagers them selves.
I'm hoping it will be like this mod
http://www.minecraftforum.net/topic/227822-10-millenaire-npc-village-20-japanese-culture-hall-of-fame/