I like it.
As for the Quick Start Guide, do you suggest to introduce a new sidebar that is visible on all Quick Start Guide sub pages or even the whole wiki?
Actually, the original reason to move from the default mediawiki skin to mediawiki skin strapping was to get rid of the mediawiki sidebar.
I still think those sidebars are wasting a lot space and are problematic especially on mobile devices. Unless I am wrong on that usability experience wise, I think these should be avoided.