Re: Group Wiki Plugin (not a release, but in progress)
I’d be fine with an index / directory page. That page could perhaps even use sorting / filtering (at some point) similar to the BuddyPress directory pages in the latest default theme… i.e. most active, most recent… my wikis, all wikis… etc. And if you’re leveraging WordPress functionality… another way to organize the wikis would be by tags and categories… perhaps with a sidebar widget and a dynamic directory page depending on which tag / category you click on. Lots of ideas 
