At the moment, the wiki plugin makes things look very wiki'ish. Would be great to have some more control over things like the tabs so we can create a wiki featured site, without the wiki-styling and nomenclature.
For one example, see my tweak here to remove the "discussion" tab and display the comments beneath the article (like a standard blog post).
Would be great to have a show/hide tab setting and then some code we can insert into the template to link to the various features instead (e.g. Edit post).