top-level of wiki: organization, library, concepts, infrastructure, space seem a bit spaghetti coded. e.g. space has a sub-page called infrastructure. e.g. library and concepts seem too similar in purpose. e.g. organization seems too loose a title for the current sub-pages.
One attitude we might try to instill in the culture is the idea from camping of "leave it cleaner than you found it." If enough dedicated people cleaned up one or two little things each time they visit the wiki it would balance out the wiki-entropy we've got going on now in the long run.