My ideal lineup: a Pansexual joined Trill Captain (actually, for how they had to play her on network TV, Jadzia Dax was a pansexual in many ways - remember Captain Boday(sp?) - with the transparent cranium?), a straight or bi female first officer, and a very strong science/ops second officer who's just a little shy and keeps getting caught staring at the Captain's spots! Not that I have a thing for Trill Spots. Why were there never any really hot male Trill in the series? Really? I want to see how far those spots go down!
:::takes breath::::
Yeah, that would be cool. Seriously, though, if they create a gay character, it would have to be a Bridge Officer (or Engineer, or otherwise main character.) I could see a gay captain, but I could also see a gay counselor, engineer, tactical officer, etc. As long as the character is three-dimentional, I'd be at least mostly happy. However, I think that if the Star Trek Universe were real, more people would be bisexual or pansexual than 20th Century gay-straight dynamics. In fact, I think sleeping with a member of an entirely different species would be seen as more kinky than just someone of the same gender.