I always thought groups like that can set projects within themselves that they can work on. I know we have the CWBP and we should focus more on it. But sometimes people like to flesh out locales that are in their RPG games. I.E. for the 4e group I've thought about proposing to flesh out the Nentir Vale with maps. Not sure the response it would have. I was thinking about doing it myself anyways as a project after my learning stage.