In my user interview with Janet, she noted her frustration at not being able to easily update portions of the site managed by Django (for example, the copy on the landing pages and the "Learn" pages). She noted that she must file a bug with webdev to make changes like these, whereas MindTouch allows her to change anything.
This is a major feature that I think we will have to carefully evaluate and design into the work flow and architecture of the wiki. In short, any and all content on MDN will eventually need to be able to be editable. I think the documentation will sort itself out as we migrate existing MindTouch content over to Kuma. The case this bug should address is how to make sure the other django landing pages we have (new stuff since August 2010 til now) can be converted into wiki editable markup and retain all the styles, layouts, images, etc. that make them look pretty and unique vs standard wiki pages.
FWIW: Not all content is in an editable wiki form. Lots of pages - Learn pages in particular - are HTML templates that require IT deploys. Changing that scenario implies quite a lot of site restructuring.