I'm not sure how many players here also play World of Warcraft, but that game had a model viewer. The idea is basicly to take the model/skin files from the game, and link them to a small sized program (1.2MB for the WoWmodelviewer). It's a great idea, and this way you can preview your character without having to buy them first, just to find out you shouldn't have bought the damn armor.
I'm not sure GW is more protected for these things, since WOW also has functions like addons, that aren't against the rules, maybe this model viewer was easy to make for WOW, and it's hard for GW. But if not, I'd love to see this program. If it's already out there somewhere, please tell me, and if not, maybe it's a nice idea for a programmer with alot of spare time