Why is this?
Legendaries are hard to acquire and so us who worked hard to get these legendaries should be able to show them with Transmogrification.
I'd like a valid reason why we should not be able to. 'Its unfair on players without legendaries' is one i'm expecting.... my response: They didn't have to put in the work for a legendary.
Allow them for Transmogrification blizzard...
Edit: Please request for a sticky so we can use our legendaries for the upcoming patch!