Integrate with XWiki
Integrating with a wiki would be neat and since XWiki is one of the top enterprise wiki, it would make sense to provide an integration for it.
Actually the XWiki team is very open to such integration and I'm sure they'd love the idea and would even help. They can be contacted through their mailing list: http://dev.xwiki.org/xwiki/bin/view/Community/MailingLists
Right now there's already an integration for Balsamiq Mockup and it would make sense to do the same for Moqups.
Vincent Massol commented
One idea of integration is have a button in the wiki to create a new moqup and it would open the moqups editor and when saving/exporting it would save/export as an image and attach it to the page. Then when viewing a page the image will be displayed with an edit button to edit it in moqups.