I know there was talk of newer versions and those went no where.
Now what if they added "cosmetic skins" to these assistants, You would still have to buy the assistant, but you could change their appearance. They could then sell the different appearances in the crown store. They could just recycle the existing merchants and bankers from throughout the game. As in you could buy a skin that looks like the dagger fall bank, or if you wanted one of the more sketchy outlaw bankers. Plenty of different merchants out there too. Maybe change which model is for sale every week or so, to keep them mixed. It would make it so we don't see 10 of the same purple robed Dunmer bankers running around.
Ummm stuff… about stuff…or something.