I really hate agenda pushing in writing. Do we need a gay main character? No! Would I be mad if we had one? No! Would I be upset if that's the only reason the character got any panel time? Absolutely! The point is; Marvel, DC and Image for that matter, have plenty of gay/minority/religious characters to use. Some are severely underused, and some are overtly exploited. What the OP seems to be asking for is some "token" character to fill some type of agenda.
I don't think the OP is asking for that at all. When you look at OP's comment, they simply said that they think there should be a new main character and that it would be nice if it was a gay male character. The rest of us gave suggestions. I don't think an agenda is being pushed just by talking about it.
I think it is a little bit of agenda pushing...Not completely blaming the OP but you have to admit that the whole "We need more _____ characters in _____ universe" thread is getting old. I'm getting a little tired of characters being made gay/bisexual (Loki, Alan Scott, etc) or changed race (Nick Fury) just to promote an agenda. I'm also getting tired of characters only being created to represent a particular sexual preference or minority. To me, when you create a character all the other stuff should be secondary. The character should come first, the tidbits should add to the character and not BE the character. My key example is Shatterstar...before he was a one note character with little backstory and little to no development. Now he's a one note character with little to no backstory and he's bisexual. I would have rather Peter David dig into his origin and the whole "Benjamin Russell" story than just have him bed hop.
then perhaps you should read the final couple of Issues of X-Factor... Shatterstar's origin is revealed. And Longshot's for that matter. Also, by definition (yours) he a TWO note character... swords and pansexual (he's not bisexual. He's in a relatively monogamous homosexual relationship with Rictor... but 'Star himself could swing ANY way...)
I will admit that I haven't read the final issues of X-Factor. I'm basing it on what I've read of the series which is around 10-20 issues with him in it before I decided to drop the title. The series itself was fine, but I didn't like Shatterstar in the issues. It was too much "He's alien, and he doesn't care who he sleeps with....isn't that craaaaaaaaaazy!!!!" vibe going on.