BetterLight in next update! Yes!

[Graft]

Ok, then the minecraft update I really, really, really want to see is NPCs with villages and that are able to communicate with you and actually build things. Not sure how hard that would be. Oh, and to have them within the normal generated world in a normal minecraft game, no modding included.

They would have to code some AI, which is quite difficult if you want the NPCs to place blocks, walk around, collect resources and do all kinds of other things on their own. Not to mention the load it would put on a server if there's a lot of NPC's.