We always hear about how the devs take too long to make certain things in the game, so why not let talented fans do some of the work?
Fans who understand 3D modeling could do it for them! Think of all the outfits, furniture, and hair styles that could be implemented.
Obviously every item would have to be screened, and approved, but if other online games can do it well I.e. War Frame, then I see no problem with a creation program. Such a system could help take off some of the burden that the devs deal with.
The main issue is that the players who submit their ideas would have to meet the quality of the devs, and their expectations. That's not a bad thing though. We want everything in this game to be well made.