I personally believe that some old and new RPG's lack certain aspects of realistic cities. I personally would like to see standard daily routines on many of the NPC's throughout the city. Some of these elements have been added in past games (like Skyrim, BG2, assassins creed) but not to an accurate enough extent.
I understand that some of you may disagree with me and may believe this to be a hindrance to aspects of the game. However, I believe it will add a certain beauty and also certain gameplay elements.
Possible NPC time Cycle.
(For this to work, a lot of citizen NPC models would