If I am correct, T297019 makes it possible to blank the title by introducing the two new system messages, MediaWiki:Mainpage-title and MediaWiki:Mainpage-title-loggedin. So {{DISPLAYTITLE:<span style="opacity:0;position:absolute;">{{FULLPAGENAME}}</span>}}
should be replaced, right?
Topic on Template talk:Main page/Archive 2
Appearance