I like the MW because my npc's are my bros/ lady friends and help me feel more immersed in the world, like i can change the world when i'm not even there.

But if we could just make the AH with start selling/buying option by calling your npc and you can just leave them around the cities. This way the cities could look "populated" with actual people (seriously where are the people now?), you can feel "immersed", you have an easy way of entering the AH and you can just go around looking what random npc's are selling.

later maybe they can add a feature where you can leave your npc at a hamlet or outpost, so you have a conduit to the AH where you are.