Nonsense.Is it? So show homosexual people, only if 'they have a place in the story'. Rubbish. Should they only depict heterosexual people only if they have a place in the story?
I know very few people who are so shallow, who lead such useless lives, that who they get turned on by is the most central and defining characteristic of who they are.
FYI, I always sort of assumed Sulu was gay... but never cared all that much. (I was a bit surprised when they portrayed him as having become a father at some point, actually... and realize this was all long before Takei's sexual preference was ever an issue).
The thing is, 99% of the time, a person is just a person. And in the course of an "adventure story" it makes very little sense for "Action heroic figure #4" to suddenly go off on a diatribe about how he or she feels about his or her social life.
If there's some element of some character which is significant to that character in some fashion... sure, touch on it briefly, but don't make an issue of it. That's what I find so annoying with all the push to have "gay characters" in Trek (usually in prose fiction). It's not that the characters happen to be gay... it's that their storylines always seem to turn into freakin' SOAP OPERAS.
I find soap operas... regardless of whether it's between two men, two women, a man and a woman, or a man and his inflatable sheep puppet... to be obnoxious! If I wanted to watch something like that, I'd turn on "As the Stomach Turns," not Star Trek...