I just discovered this thread, I am soooo late to this discussion. But I see it as a lucky surprise Christmas gift. 
As the husband of a gay Marine... I basically don't even need to finish that sentence, do I? I'm elated that this thread exists and that it garnered some attention from the writers/developers.
And despite the fact that Patrick is all the white knight I will ever need, I still long to see him represented in this medium (which is why I pretty much always model my main character after him).
I think Dorian is fantastic. He is a very accurate portrayal of a gay man who has spent his life grudgingly accepting 'fun and sex' as the pinnacle of his romantic endeavors. He is witty, guarded, sarcastic, narcissistic, and flirty. I used to be Dorian.
But that is exactly what makes the 'gay white knight' such a compelling and desirable character.
His strength of purpose and character allow him to rise above his frustrations over living a life of sexual repression. He is not bitter, he is driven. He is not angry, he is inspired. He does not merely sit around and mock the world for its flaws, he actively makes the world better.
Patrick saved me from myself. He saved me from believing that the world was broken. He was, and always will be, my hero.
Bioware, I implore you to understand: If you want to send a message about LGBTQ people - and more importantly, to LGBTQ people - send this message. Men and women like Patrick exist. Gay heroes exist. Stop reminding us of our struggles and quirks, and instead remind us that we are heroes.