Board Thread:Support Requests - Getting Technical/@comment-27105226-20160217200352/@comment-24473195-20160217202030

You're in luck. There is a whole wiki dedicated to making wikias portable, see here.

"Lua requires code approval,"

Lua doesn't require code approval. Its resulting css is also stripped on mobile.

"Rewrite Templates to have a mobile and non-mobile version (ugh)."

See this or this for some tips.

"Restrict displayed content on mobile (This goes against everything mobile portability stands for)."

Some content will simply not be usable on mobile, e.g. tooltips.

"Write an extension to import a CSS file on mobile (If Wikia Staff would even install it)."

Well, it can't hurt to try, and even if Wikia doesn't allow it perhaps the Wikimedia Foundation will welcome the extension.

"Simply ignore the mobile site altogether."

Ignoring a problem doesn't make it go away. Sometimes you simply need to make tradeoffs on what should be seen on mobile. Perhaps, like the portable infobox, a useful solution can be created for a specific use-case.

"Is there any way to control the display of an item in mobile outside of the hidden class?" No, unfortunately there is no other way, as far as I know.