There's a good concept used in Module:TNT. It's is developed centrally on mediawiki and is regularly updated on all languages.
Such a concept can be replicated across other modules like Module:Infobox, Module:WikidataIB, etc.
Just provide a checkbox in local language wiki module namespace, "auto-update from mediawiki". Once enabled, whenever there's a change in media wiki module, it should get auto-replicated to such languages which gave their consent.