Mercantile Houses were released last patch.
For those who haven't gotten around to using them yet, they basically give you access to search in the ward of any city from any city.

Here's the problem though.

Uldah's wards are up to the neck in stock and variety while the other two are always empty.

I propose they are merged into a single Mercantile House and that the search retrieves results from all three cities in a single window as to foment players to start placing their retainers outside uldah.

Like this post if you agree.