Not sure if you're already aware (and that's what you're referencing in your post) but there are actual attempts being made to add "kink" to the LGBT lineup too...
I have been wondering how the increasingly used umbrella term 'Queer' may obfuscate as well as creating a very powerful group identity.
Lyla Cicero comment:
'What Do All Those Letters Mean, Anyway? Defining LGBTQIAPK'
People often ask me “what do all those letters stand for, anyway?” I’m not quite sure why they ask me, since most don’t know I belong in that alphabet soup somewhere. But they ask, and I’m glad, because I think they should know. However, there is a part of me that’s annoyed by the question, and thinks, “come on, people, keep up, it’s not rocket science.” Of course, there are those who don’t know “what all those letters stand for” because they don’t want to, due to ignorance or hatred. But there are also well-meaning allies who are having a hard time keeping up. Hell, there are a whole bunch of folks who fit within that list of letters, or a longer one we haven’t come up with yet, who don’t even know it. It is confusing. It should be. That list of letters keeps growing and growing because the variations in human sexuality and gender identity are infinite. We probably need the whole alphabet to cover them.
I have this fantasy that one day when there are more of us who fit under the “queer” umbrella than don’t, it will finally be clear that we are all “sexual minorities.”
This is not at all to diminish the experience of people who have to live, openly or not, as sexual minorities in our culture right now. But perhaps the reason they are in the “minority” is because of how many others are still closeted in various ways. How many people must be out there who have never spent much time considering their sexual orientations or gender identities due to compulsory heterosexuality, compulsory gender-normativity, and/or compulsory sexual vanilla-ism in our culture? And how many simply don’t fit labels our culture has yet produced?" (continues)
www.rolereboot.org/sex-and-relationships/details/2012-06-what-do-all-those-letters-mean-anyway-defining-lgbtq