Well, when I first dreamed of WB, I decided I wanted something simple - top priority.
Next priority was to have as many features as possible, that could be accessed without cluttering the basic features interface (hence, the "advanced" button).
What I have ended up with is something that can be used for either very, very simple websites - or alternatively, very, very complex websites.
However, as SilverFeces has said, WB needs more community features - this is what I love about WebsiteBaker - the fact that anyone can just make a module to add whatever feature they want.
In 3.x, modules will extend to be able to modify the administration (so that you can add extra functionality for admins only), so hopefully this will allow even more to come from WB.