I really don't see why so many have a problem with Imoen being lesbian/bisexual. I really don't. Someone said something like "I have nothing against gays/lesbians but if Imoen is lesbian, I won't play the Mod". That's a contradiction of statements, as that person WOULD play it if Imoen was straight. If that is the only reason you don't play the Mod, you have a problem with the issue of sexuality, although not the one of a real person.
Anyone who's played the game extensively knows that there are several places in the game where Imoen's deep affection for the PC shows. Tree of life,
ToB banters, Sarevok's comment, after the fight with Mel. I don't know if this could develop beyond deep sibling affection (or if it already is beyond that point for Imoen), but I think it would be presumptuous to say that Imoen's sexuality is one way or the other, and then refuse every other option. NO ONE here can know what Imoen's sexuality really is.
A Mod is a story waiting to be told, a set of possibilities that COULD happen, a glimpse at a fork in the destiny of a Bhaalspawn that happened because of one choice over the other, and not something claiming to be an absolute truth in the
BG universe!
This is a Mod, a small piece of the whole, a select piece that portaits a possible chain of events, and therefore it is more appropriate to say "anything could happen" than "that could never happen". Feel free to share your feelings on the subject, do you prefer Imoen this way or that way, after all, that is what this board is about, but don't say things like "Imoen was never meant to be that way", because you don't know that. No one does. This game is more ambigious than a political statement, and left open to every interpretation possible.
My opinion is "I'll play it no matter what Imoen likes". I'm pretty sure it'll be a great Mod regardless. If Imoen is bisexual, fine. It doesn't matter what gender my character is, then. If she's lesbian or hetero, then again it is fine. The story and Imoen's personality will be more clearly defined that way. I see ups and downs with all the options.
*Edit*
Typos and minor clarifications.