Yay! good to hear... we can wait for it.
I think it will be important that only bound vanity can be stored in any feature you add though. Or it will end up being cheap storage for merchants to hoard vanity gear.
It would also help vanity sell a lot faster now that players will have somewhere to put it when they aren't wearing it. But good news to hear it's in future plans... I don't suppose you have any idea where the building will be? I heard some awesome guy made a suggestion on where that could be