Backstory: I'm gay.
So this game actually got me the first gay romance in fantasy games ever. Typically, I play the straight role, like the HoF. I just couldn't see him going with Zevran, and Morrigan's personality was just far too enticing to pass up. So voila!
DA:2 I went with Isabella (regretted it after I figured out she's all stereotype pirate) then went with Merrill, both really good romance options. But the guy options? Ick.
With Inquisition came Dorian and I was skeptical. I was watching the videos and the threads involving his character before launch and I'm used to gay characters being very... well, gay. But for the first time, I could actually connect with the guy and decided to let go of my typical "Straight hero" and went with it.
Do I think that we need every sexual orientation in the game? No, definitely not. Dragon age 2's "Everybody can do EVERYONE!" was very uncharacteristic. Orientation is part of who we are and just flinging labels around on characters who don't fit it doesn't work. That said, I do believe that DA:I did it fairly well for the LGBT side of things and they all fit their characters perfectly.