This was in the latest producer letter,
–NEW– Retainer system improvements
–NEW– Ability to summon retainers currently operating a bazaar
–NEW– Ability to save retainer location
The system that houses the wards will never be 100% stable, so as a result, they are working to implement saved retainer locations. This will obviously be used as a restore point when wards crash.
Have this implemented and the ability to search for HQ specific mats, and there is ZERO need for an actual AH.
(Oh, and seeking. Player seeking items being displayed on some list, would be good too)