Board Thread:New Features/@comment-1526346-20160815035906/@comment-24473195-20160815090741

There are some "prepackaged" templates, although these are only automatically imported when a new wiki is created, see w:c:starter.

Anyway, what you want is partly possible using Special:Export and Special:Import and templates

"These files would have to rigorously tested to make sure they import correctly each time."

And who will be doing that testing? Templates are created by random unpaid contributors, who don't care even a single bit about testing their templates properly and will likely only slightly test it in their wikis. In fact it is not really reasonable for any sane person to extensively test wikitext templates because wikitext isn't a well specified markup language, it is not a  programming language and hasn't got any proper tools to do so.

Beyond the issues of testing, what you want will never be fully possible because some wikis use extensions that aren't available elsewhere, and in some cases wikia will refuse to activate them.

If I recall correctly, there is / was also a bug with exporting lua modules.