i think that there should be different backgrounds for every challenge(not the 3 day or monthly) and there background would be in some way related to your location. and kano you guys dont have to do it yourselves i am sure if you ask people to make fan art for challenges and hold a contest for it there will more then likely be alot of submissions. that would raise your popularity and player to company relationship. because as it is now alot of people say you are only for the big money spenders but this would start the change in their mind if you guys started to do neat little events like this to connect to your community.
Thanks neill, I'm not exactly sure about the feasibility of this exact idea but contests and the like are always good!