I agree with @mento about the Guide page. That page has always kind of confused me personally, and I think most people don't understand the purpose of that page as evident by the lack of info on 90% of them. I know I've seen pages, and edited a few, that seam to include information that might be for a guide page on the main wiki page.
I mean are we just looking for something like a GameFAQs guide with Achievements/Trophies info, level guides and collectible specifics, character/vehicle details. Or is it for something else?