Would it be possible to give some of the NPCs (mary, Gobbler, his goblin buddies) Some limited paths that allow them to wander around a little bit?
Their stasis is painfully obvious when somebody drags a rat out of Crazy Jane's place... they all cluster on the door step and linger. With some limited pathing, they would return to their areas.
Also, to keep the goblins from running over there so readily, they could be moved a little to the east (around the corner from Jane's), or further to the South (just south of the pump house door). Either move would aleviate the congestion where they currently stand. That poor dwarf looks like he is ready to kill the goblins at a moments notice.