Thread:Guy Bukzi Montag/@comment-35102879-20191218221644/@comment-35102879-20191222105645

> I'm not even sure if any of us has the user rights to install MediaWiki extensions.

AFAIK admins of a given Wiki can ask Fandom for installing extensions, see the acceptable extension page I linked to. BTW when I look at the page again, I must say I overlooked that they accept a "Variables" extension on request, they don't mention the "PageVariable" extension. Just a detail (not a question on you), but I wonder if someone made a "mixed extension" of those two which would enable to define a variable without outputting it, use it on the same page and on other pages as well...

When speaking about Semantic MeidaWiki, Fandom write they no longer enable it because of performance and stability problems. As you write, the templating approach hopefully doesn't have those problems (so far).