I wasn't disappointed. The only reason I wanted the Black Emporium was for the Mirror of Transformation. The original character creation tool was so poor that I see this belated inclusion of the Mirror as a kind of bug-fix.
Since this patch (as I like to think of it!) was released, I've started another playthrough, and I'm really enjoying being able to tweak my character's appearance every now and again. I'm even daring to hope that - at some stage before I reach the end of the game - the character might even look the way I actually wanted it to! 
I really hope that Bioware has learned a lesson from this, and that every future Dragon Age and Mass Effect game will include - as a matter of course - a tool to enable players to continue tweaking their characters' appearance throughout the game. It's insane to simply assert that the character creation tool is superb (as they did with DA:I) and hope that players won't notice it's not true after the game is released. Even if you do believe the CharGen is perfect (and I can't believe for one minute that anyone within Bioware really did!), surely it's better to include something like the Mirror of Transformation from the outset? It's such a little thing, and yet it would avoid all that unnecessary backlash about plastic hair, clownish make-up and high-viz, see-in-the dark lip-gloss!