User blog comment:Ducksoup/The Future of Infoboxes on Wikia/@comment-5590118-20150825212321/@comment-5590118-20150825220732

It actually wouldn't. If anything it would help separate out templates.

In say... Template:NavBox you have the conditional that either loads Template:NavBox/mobile or Template:NavBox/desktop. This helps to separate the different views so that they can be used when they are appropriate and on the page you still use Template:NavBox.

And yes, yes it would because everything that you need to update can be updated per effected platform and it would work out really well.