Dirk Hünniger, 28/09/2017 16:30:

http://mediawiki2latex.wmflabs.org/

What about making the export to those formats available to wider public. Can we eventually bring these abandoned features back to the book creator. Could I help in such an effort.

This is important, but I don't understand whether the Labs instance you linked is a server which can be used by any MediaWiki wiki as renderer for the Collection extension ($wgCollectionMWServeURL).

Nemo