I am not entirely certain what is possible with the current engine, but being able to set NPCs in my Condo to have a specific range in which they could actively wander around would be really neat I think. Could make social Condos more social as well, or at very least a little more lively even with less people visiting.
Between a set patrol route, a wander radius around where they are placed down, a wander radius around a specific piece of furniture, radius in relation to other NPCs. A flexible array of pathfinding that would add a whole new level to what people could do with characters around their condo