I thought that moving the choice to taking place as part of the CC would be the equivalent of setting a sexuality for the NPCs as well. Without it, it just means that Bioware has to write in more romanceable characters into the game. With probably only 7 squad mates overall, that means that we'll probably get 1 straight human of each gender, 1 gay human male, 1 lesbian human female, and 1 bi-sexual human or a mono-sexual (asari). If they make every squadmate romanceable in some way, then we may be a choice of 2, likely straight alien romances... but I don't think every squadmate should necessarily be romanceable... might be nice if 1 or 2 of them had other romances going on outside the squad (i.e. be married or something like that). Since it's unlikely that they'll be a lot of opportunity to forge many long-term (throughout the game) relationships with people who are not aboard the Tempest... that might mean a very limited choice for the PC... and I don't like making my character into either a gay or straight individual just for the sake of doing an alternate romance... but if there's really only 1 choice of squad member for each orientation... what choice is there really.
Anyway, it's a moot point since they've apparently already said they won't go with this route. We'll just have to see what they do do. At least they've promised romances that proceed in a "more organic" way rather than the "rather formulaic" method they've used in the past.
Well, not every romance has to be a squadmate.
It kind of is a moot point because if the game has to be out next year, it's already written by now. don't expect many major rewrites right now.
I think they do have to do a minimum of 2 for each orientation, which would be 4 -Straight female,, straight male, bi female, bi male. In order to add choice and replayability. IMO I'd like maybe 6.
One of the good things about, say, Dorian from DAI was his sexuality actually mattered. Sexuality does matter in these game worlds, and we have no real idea what the other cultures of the ME world think about sex, reproduction, homosexuality, transsexuality, etc. At the very least considering these issues, and how it might affect the characters of other cultures, can both add to their characterization and the contextualisation of their cultures. You can't really do that if you have sexuality which changes depending on the players. From a writing perspective, you may as well just write a new character if you're going to rewrite half of their scenes and alter their sexuality.
I also think having the player decide their own sexuality via some setting or options menu is a mistake. Some players might find themselves drawn to other characters who they didn't expect if they were RPing in a certain way. As for me? I find it very weird to imagine myself in a relationship with another dude, so I never really enjoy taking that option in game. But I could understand someone who really felt for another person they didn't expect to. I mean, I thought I'd like Miranda (cos dat ass) but turns out I didn't like her at all. Meanwhile I wasn't psyched to see Tali again but she ended up being one of my favourite romances in ME. If I'd shut myself out because I made my char gay/straight, then that too lessens the options we have.
There's a good chance that we'll be picking up people to join the tempest. In any case, we have no idea what the game will be like. I think you're making a lot of assumptions when very little has been revealed about the game as of now. Let's just wait and see, endless speculation doesn't really get us anywhere.