I like the word "gorgeous" for him, and it is generally how I think of him. It's quite amusing because the first time I saw him he was quite unappealing. The picture on the DAI website is a poor one (lighting, angle, and so on), and I thought his facial hair was absurd. Then I finally met him in the game and became completely enamored. A good chunk of that is his personality, and getting to know him really altered my views on his appearance.
I'm not accusing you of this, but I don't think Dorian is actually as vain as many players make him out to be. I'd imagine that in Tevinter his appearance is nothing significant, particularly given the way he describes the altus emphasis on breeding -- "... perfect mind, perfect body, the perfect mage."
I don't argue that he doesn't know he's good looking, is also appreciative of his own appearance, and that good looks have power in and of themselves, but I don't think he believes they are actually important.
In my head-canon, and my fic writing, I very rarely have my Inquisitor acknowledge Dorian's attractiveness openly, even though he does think about it on a few occasions. Actually, now that I think of it, the first actual mention is after they've been together for quite a while, taking place sometime after Adamant, and is said in a somewhat playful manner.
Dorian has a lot of layers, and the false, expected (this is important) vanity is one of them. My Inquisitor knows this and tries not to play into those expectations.
Cassandra: You're not as handsome as you think, Dorian.
Dorian: I must be, or you wouldn't have been thinking about it all this time.
Cassandra: Anyone who claims it as often as you must be dreadfully concerned they're not.
Dorian: Look at this profile. Isn't it incredible? I picture it in marble.
I love this banter because his response is just so excessive that I can't think how anyone can take it seriously.
Again though, this is just a general observation, not directed at you specifically, Witch Cocktor.