While I'm all for BioWare being more inclusive, open-minded, and trying to appeal to all various demographics as much as they can, they are still video game designers. Their primary purpose is to make amazing games with epic stories and unforgettable characters. BioWare is not comprised of sexual experts who know the intricacies and theories behind every sexuality in the world. Honestly, I don't believe we should hold them to such an impossible standard to reach either.
BioWare has already done the impossible. They've appealed to more underrepresented demographics, in terms of sexuality, than any game developer before. They are constantly improving their craft and making more believable characters that players can truly relate to. However, we must not forget that relationships are only a part of what constitutes a BioWare game. While I'm all for the writers taking on knew challenges and new experiences, they can never forget what the main purpose of a BioWare story is.
Creating an epic tale where the player is the hero of the story and must conquer an insurmountable threat. That is the main theme of every BioWare game. I would hate for the quality of BioWare storytelling to suffer with the writers attempting to write and express new types of sexualities that haven't been interpreted before. To my knowledge, most of the writing team is heterosexual, so their ability to adequately represent these groups in a respectful manner is already a challenge based on their own personal biases. I'm all for more inclusion and a more welcoming experience, but there is a point where BioWare can only do so much to please everybody.
Relationships and romance are certainly integral parts of a BioWare game. I would not want BioWare to go overboard and then entirely miss the reason why people love these games to start. This isn't a dating simulator. This is great storytelling, great characters, and overcoming an incredible obstacle. If it were permissible and not to affect the storytelling of the main plot, I wouldn't mind it. However, the writing team is under great strains to develop and create new stories, new franchises, and can only dedicate so much time towards romance arcs.