Both biowares other original IP's (jade empire, dragon age) give you the option of "swinging both ways". However, in Mass Effect, every romance option is either the opposite gender, or monogendered and still capable of bearing Shepards child.
I guess what I'm trying to say is, is it possible that the mentions of "human genetic diversity" being wider than that of other races going to result in some sort of "reverse-asari" scenario in which if a human mates with an alien species, it will be mostly alien with a few strands of Human DNA? Perhaps a back-up plan for the protheans that if on the off chance the reapers were defeated, humans could help rebuild the populations of the other species?
I've really got to start being more specific on these.
EDIT:From an industry standpoint, not in-game standpoint. Biowares triple A original world games were Jade Empire and Dragon Age, in both you can have M/F F/F M/M relationships and threesomes, in DA: Origins it was possible to have a foursome, and in DA2 all but one of the love intrests were BI. What I'm talking about is that Bioware is not afraid of this S**t, they are famous/infamous for this. So why suddenly stop this trend in Mass Effect? Because an Interspecies/Homo relationship would be too much? Then why is it possible to romance Liara as a female? Because she could still have a female Shepards Child. I don't think they would do this unless it was important to the story.
I guess what I'm trying to say is, is it possible that the mentions of "human genetic diversity" being wider than that of other races going to result in some sort of "reverse-asari" scenario in which if a human mates with an alien species, it will be mostly alien with a few strands of Human DNA? Perhaps a back-up plan for the protheans that if on the off chance the reapers were defeated, humans could help rebuild the populations of the other species?
I've really got to start being more specific on these.
EDIT:From an industry standpoint, not in-game standpoint. Biowares triple A original world games were Jade Empire and Dragon Age, in both you can have M/F F/F M/M relationships and threesomes, in DA: Origins it was possible to have a foursome, and in DA2 all but one of the love intrests were BI. What I'm talking about is that Bioware is not afraid of this S**t, they are famous/infamous for this. So why suddenly stop this trend in Mass Effect? Because an Interspecies/Homo relationship would be too much? Then why is it possible to romance Liara as a female? Because she could still have a female Shepards Child. I don't think they would do this unless it was important to the story.