Few other popular sites use MediaWiki as their primary CMS. Basically it's just us, Wikia, and wikiHow AFAIK. I'd definitely go to wikihow.com and check out what they've done in their just-launched redesign.

Here's a screenshot of their previous homepage, for comparison: https://upload.wikimedia.org/wikipedia/en/archive/9/9a/20131019173222%21WikiHow_screenshot.png

Steven Walling,

Product Manager

https://wikimediafoundation.org/