I would love some more votes, so… bump!
Some people actively seek LGBT stories for representation and I think it would attract some really great readers!
I am heterosexual but I would really enjoy reading stories that have LGBT characters and protagonists so yes I am completely on board for this. I enjoy a story because of its quality and diversity really improves the realism as well as enhances the reading experience.
Regarding offending people, let me put it bluntly for those who get offended. Tough luck and cry me a river. This is your story and you have written it in a particular way, the characters are of a certain sexuality, mindset, race, etc. if that bothers any readers, then it really is their problem rather than yours as they have missed out on the opportunity to read an amazing story.