Part of the problem for this actually happening is alot to do with how they failed to make the good people equally distribute they're population between each of the three city states, altho the visual aspect of seeing blank Npcs with bazaars isnt much of a needed part of the game.
I used to be in total favour of a market ward system but really with the strain it puts on the server, not being able to summon retainers where you'd like forcing Higher tax's, and the frequent market crash's( altho it has improved) i really dont mind making it more simplfied with just a click and buy, the game wouldnt suffer losing the visual zombie npcs standing around in the wards.