Mod-Rewrite Generator
What would make setting up the wiki with custom URL settings really easy is if there were a page in the AdminCP that told you EXACTLY what rewrite rules to add. Because of possible different settings, this makes the documentation vague on the subject, and users often have trouble figuring out the if-then scenarios. If a page could do this for you and tell you the final code you need to add, it would help many of these admins.
Added for the next build. Because several bugs forced us to feature-lock for Beta 3, currently there's only a generator for .htaccess. We do intend to add support for other rewrite types in the future.