It's currently used on meta:List of Wikipedias by language group and the meta:Template:NUMBEROFGROUP template which sums up the data by language group. Your bot will also be extremely useful on: meta:List of Wikipedias by edits per article, meta:List of Wikipedias by sample of articles, meta:List of Wikipedias by speakers per article, and meta:List of Wikipedias by language family, where users have been begging for an automated solution for years.