WMF has started a process for fully automating the Monthly Report Card generation process. Sources are generated automatically right now, yet the Report Card itself is a mixture of scripting and manual processing, with a large spreadsheet as intermediary between csv files and charts. More on this on http://www.mediawiki.org/wiki/Manual:Wikistats/API
Your feedback is very welcome. Please use the talk page of that article, to keep discussions centered at one place.
Erik Zachte
wikitech-l@lists.wikimedia.org