What about a wishlist for each apps forum (3dsmax poser Rhino etc) where people who want a specific thing modelled/done can make a post with their suggestion. This wishlist would grow pretty big fast if it wasnt in pages or reset by the forums specific moderator. This way a person who wants a thing for their scene in bryce could ask the persons in the 3dsmax forum to make it if they want to ofcourse. I believe it would be a good thing for people out of inspiration in their modelling progress.