I was hoping for Vivienne to be romancable and because of that I'm obviously not happy. From what I've seen before, I had Josephine, Vivienne and Sera on my mind as possible options for my Male Inquisitor. With this latest reveal, the only option left is Josephine. She would've been my first choice anyway, but I still see the positive side to this, I won't have to choose. :-)
I also feel like this doesn't have to be about (in)equality at all. I mean, obviously it's Bioware's decision and maybe this was part of the decision-making process, but for me, it's about the characters. Maybe Vivienne's character, her agenda, her political ambitions and realities don't allow for romance or relationships at this point. Or maybe she's already in one and wants to stay loyal or has to safe face by staying loyal. Maybe she just doesn't want the Inquisitor or any kind of relationship....Sera has a pretty good reason, too. She won't be an option for my Male Inquisitor, because she's not interested in men that way.
Also, romance isn't everything. Yes, I went there.
If you like her or are intrigued by her character (or any other) you will still be able to talk to her and maybe even start a friendship. This could also be quite interesting. I certainly intend to find out. 
I was hoping for something else, but it's like this now. I often read about putting more realism in games. Well, this is realistic, not everything goes the way you want it to all the time. Well, at least this is my take on this whole "problem".