Nice job, Flame. You've obviously put a good deal of thought into developing this scale. I like it.
One thought kept popping up, though. I was bothered by it being called 'GD Scale' rather than, say, 'Gender Identity Scale'. I don't think that the degree of dysphoria that one experiences is a reliable way to decide where on the scale one falls.
I think it's possible to have a strong female gender ID while not experiencing psychological trauma. GD is a mental disorder caused by being deprived of a means to express one's gender identity. The two are really independent conditions that often coincide within an individual, but, in many cases, do not.
I believe I have a gender identity which is strongly female. I would estimate it being equal to my male identity. That bi-gender split has not changed over my life time, but the GD that I once experienced has all but disappeared recently as a result of allowing my female identity a certain amount of freedom to fulfill itself.
That fact made it very hard for me to place myself on the scale. I found that a could be anywhere from a 4 to a 7, so I settled on 5. But 'Andogynous, third gender, no gender' doesn't seem to fit me. We get into the problems associated with labeling that Sammie, Missed Miss, and others have made good arguments against.
I do think that my 'Gender Identity' is about in the middle of the scale. I could go either way in terms of gender expression, particularly if I was young again. To me, 'androgynous' is more of a style of gender expression or presentation than a gauge of gender identity. Being split more or less equally between my male and female identities, I tend to flip back and forth between presenting as one gender or the other. Any mental discomfort I feel today is just the unease of presenting as female in a culture which still doesn't accept gender fluidity as a normal human condition.
I hope my comments make some sense, Flame, and I do think what you've come up with is a good start.
Clara