Please add https://www.mediawiki.org/wiki/Extension:InterwikiExtracts to Outreach. It has a lot of original content but overlaps with meta for some things (e.g. Wikimedian in Residence info) and it's a pain to recreate and import a million modules and templates from meta, commons, en.wp, etc. I believe that this can resolve this problem by allowing us to import content live. (Correct me if I'm wrong.)
(Removing Outreach-Programs-Projects as this is unrelated to Outreach Programs (see project description). Removing MediaWiki-Export-or-Import as this task is not about the import or export code in the MediaWiki core codebase.)
@Koavf: By "outreach", do you mean outreach.wikimedia.org ? If so, https://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes would apply. However, https://www.mediawiki.org/wiki/Extension:InterwikiExtracts is not yet deployed on any Wikimedia website, so the entire extension code needs to get security-reviewed etc, see https://www.mediawiki.org/wiki/Review_queue for steps required.
In general, please follow https://www.mediawiki.org/wiki/How_to_report_a_bug to avoid misunderstandings (and to make sure to report underlying problems to solve) - thanks :)
If I understand correctly, this is related to T6547: Support crosswiki template inclusion (transclusion => interwiki templates, etc.) or T11890: Reasonably efficient interwiki transclusion?
Correct: we need both standard modules and templates included without having to remake them or import every revision over and over again, plus we want to include some content in form of actual pages from other wikis like Meta.
As far as I see, that extension is not deployed at any Wikimedia site. For us to be able to do that, the extension needs to be reviewed for security, performance and where applicable, for design. It also needs an active maintainer, who should request such reviews and act on them. See more at https://mediawiki.org/wiki/Review_queue