The second point is good and important, and it galls me. Almost none of the queer characters I see in basically-straight fiction have any queer friends, they are always surrounded by straight people. Friendship and community are some of the most important aspects of my queer identity and my life, and I'm saddened that most queer characters never get to experience that sense of community.

Mostly I see readers ragging on works (especially fanfic) where there are too many gay characters, "why is everyone gay" etc. but in my experience, people self-select queer friends long before coming out. Having three of four close friends (for example) all come out at different stages strikes me as being quite natural and making perfect sense.

I hardly read any romance or erotica (or anything in between) but even I can tell that people view queerness as being innately kinky. Especially bisexuality, but there you have it. I imagine if there are any trans* characters they would be mostly in the erotica shelves as well, under all sorts of names that I'm not comfortable repeating.