Mmmm... nah. We don't have any plans to bring this back.

If at some point in the distant future we decide that there are enough interesting 'non vanity' armors, helmets, and weapons to convert into vanity and put into an event, we'll consider bringing the concept back. We will also try to give this hypothetical event a much better name. "Forgotten Vanity" makes it sound like we are bringing back old vanities (and that's never been the point).