For sure, but I don't think that's what people are necessarily discussing here, or at least I know I wasn't.
I know the discussion around BG3's playersexuality (vs. bi/pansexuality) is its own can of worms, but even ignoring that I think Shadowheart isn't exactly showcasing any sort of representation, past the playersexual mechanic. There is no discussion or insight or mention of her bisexuality. I do see how her identity (and having to deal with repressing it) is a vital part of her storyline, but I don't see much of a metaphor for anything there besides mayyyyybe a trans narrative if I'm real charitable.
Yeah, her sexuality is not that deep or developed outside of the playersexuality. But she mentions Halsin being nice to look at, has a liking for Karlach and a romantic past with Nocturne, so the entire spectrum of genders are canonically represented, though very briefly. But like you say, her sexuality is not front and center, but I think that can also be part of a good character. One that has a lot else to bring to the table and is not defined solely by the romantic and sexual aspects. In a way I like that better as representation, Shadowheart is just casually pan and open minded, she doesn't shout it out like some of the other more sexualized characters.
