Another possibility is that with this, people will start using these private in-game vendors instead of going to sites like graaldepot where graphics are stolen. Its far fetched, but those sites may stop uploading graphics due to failing popularity, and artist boutiques would become the new hot way of getting customs.

To be honest though, I would really just like to see some trading, economy, and money exchange stuff. I feel like it would add a lot to the game.