Wow... Well I'm sorry... I actually have no idea. lol I'll say that I agree with how you feel about that though, that does seem a rather strange way for things to get done... I'm sure we can find out though, as the internet is a wonderful thing, but also there should be someone one here who either knows, or can link us to these wonderful sources I'm alluding to.
Also, if you're going to create your own Craftworld, consider checking out Buanneth Fhirin. It's a great little coalition of vanilla Craftworlds that we started putting together, but the best part is it's got such active players, and a lot of great resources, that we're working on. Several player are working on developing their own fluff behind their craftworlds (and they look great), plus Gutstikk has a project right now on "how to design a craftworld." It's all good stuff if you're looking for inspiration, and maybe we'd be able to answer some questions.
Good Hunting,
-Stezerok