Hunter

First idea is regarding Hunter reputation. I think it would be a good idea to rename this reputation to Tracker. The purpose for this change is to remove confusion between the reputation and the profession of the same name. The name Tracker would refer to the reputation gained from "tracked mobs" rather than the profession used to gather resources.

Auction House

My second recommendation is to add another service to the Auction House, a "Requested Items"

Currently there is an option to offer for sale at a bid price and, if you don't put a buyout price, the highest bid buys, or if you do have a buyout price the purchase is completed as soon as a player wishes to purchase it at the buyout price.
Similarly, I would like to see where there would be a listing of items wanted for purchase. If someone needs a particular amount of materials, or collection pieces or any other traded item, allow a "Requested Items" posting. Have an amount that would automatically purchase, like the buyout works, and have the ability to bid lower prices to the buyer who requested the particular item just like the bid/buyout on sales.