It should be possible to transclude pages while treating their contents as unwikified text, (i.e., wrap the page in <nowiki> tags *before* processing) so as to avoid invoking unwanted functions.

Example: {{#invoke:String|find|{{:Jurassic Park}}|dinosaur}}

The above invocation doesn't just return the position of the string "dinosaur" within the text of the article Jurassic Park, as one would expect; it also invokes a Lua module (from the film infobox) that italicizes the page title.

Anomie suggested a path to a fix here.

If this task is not worded properly, or does not include the right tags, please fix it instead of marking it invalid; there's a real problem here, and my inability as a non-developer to identify its source doesn't make it go away.