1. AUCTION top sellers, if your a top seller for the week/day/month, however you wanna set it out, you get a reward, and lets say your number 1 top seller, you name goes number 1 on the "Sellers" tab!
2. SELLERS tab, is a good way to go onto people's account the are top sellers, if someone says "Go to my account for great p4", instead of looking through /AH, you can go to there account page!
Branching off of this, I think that there should be a way to have a 'reputation' score. Since scamming is allowed on Dancraft, I think that there should be a way to add positive or negative reputation to players on an interface that could be viewed by other people in-game or on the forums. There should be a cooldown on adding positive or negative rep.