https://bugzilla.wikimedia.org/show_bug.cgi?id=55099
--- Comment #1 from Kunal Mehta (Legoktm) legoktm.wikipedia@gmail.com --- See also https://bugzilla.wikimedia.org/show%5C_bug.cgi?id=4547 (Enable template transclusion from Commons).
A PyWikipedia feature for putting the same page on every/selected wikis could become a prefiguration for that.