I had a cool idea for a wards search function that, in theory, wouldn't be too hard to implement.
I know they are working on a search function of some sort already, just thought this would be cool.
They could add a command for querying the wards, such as /q (for /query). When you used it in the wards, retainers with the item you query for would answer you in a RP way.
/q "Iron Ore"
Retainer 1: Get yer Iron Ore here, 2000 gil!
Retainer 2: We got Iron Ore here, 1500 gil!
And so on.
This would be kind of cool for the RP aspect. You would also get a list of the retainer names and prices back. It would only work in the specific level you are in (encouraging people to sort better). The nice bonus of this is, it would also allow sellers a nice way to price check right before they list something, like most games AH allow. I know, undercutting blah blah, but every game has this and no matter how they do a search feature, sellers will use it to check the competitions pricing.