Housing
It would be great i one could build houses and make them "open" so that an NPC could move in.
The chance for this could be random so that it might take a while. The size and the location of the house may affect chances. An empty house surrounded by already filled houses could increase the chance while an empty house outside any town would have a severly decreased chance of residence.
This would enable the building of 'populated cities', a concept which both me and a friend would -love- to see as no other game has ever really done that.
NPCs and Quests
The presence of NPCs in a house opens up for interaction with them and what better way to do so than gaining a sort of quests. These might range from simple things "please, take this apple to the baker in the next street" to more complex things "bandits are plaguing my farm, can you please slay them?"
To make them more interesting, targets of a quest could spawn once the quest is started. I.e. Someone might shout for help and you rush in, only to have a couple of tugs spawn and start swinging at you.
Quests could net rewards in the improvement of the NPC. A basic npc could possible sell some of what they gather over a day. Some basic produce without much gain. Finished quests also increases an npc loyalty so that it keeps staying. Some NPC's could dislike each other and finishing a quest for the baker may reduce the smith's loyalty and thus make him leave.
A more advanced NPC, whom you've helped with several quests, could improve and sometimes sell valuable items for a cheap price. This could be balanced by the chance of such an event being fairly rare. Often they would sell you convenience stuff.
I really apologize if these suggestions are unnecessary or outside the scope of the game. As I said earlier, I don't own the game yet as I'm waiting for its full release
