Then why not make a configuration option with default value "false" that controls if the special page is shown or not? There are hundreds if not thousands of MediaWiki-installations out there that are small enough so that the inefficiency doesnt make a difference, and for those wikis the page is actually quite helpful.
Am 06.04.2013 14:22, schrieb Chad:
FWIW, I didn't remove it because it was slow on enwiki, but because the queries sucked and it doesn't scale. Just because a query is fast doesn't mean it's efficient...just means your dataset is small.
-Chad