Ok I guess I'll help muddy those waters some more.
While I will accept transgender as an umbrella term where cross-dressers, transsexuals and the rest fall under. To me the term doesn't really fit what I do as a cross-dressers. I wore women's clothing, It was fun. while there was a lot of self reflection as to why I did it, my sense of my own gender didn't waiver. I was dressed as a woman but felt like a man. It felt fun to dress as a woman but it felt wrong to identify myself as a woman. It is hard for me to think that just because of a wardrobe choice my gender was now some how in transition. To believe that is to give credence to the idea that a man in a dress is less of a man or some how loses his manhood. I don't believe that.
To call transgender as an umbrella term doesn't seem right either it is more of a corral were someone penned in a bunch of miscellaneous barnyard animals. Sure technically they are all barnyard animals but a pig is different than a chicken, which is different from a sheep which is not the same as a cow. To some they might be categorized as farm animals but they all have different needs and demand different care. It isn't a one size fits all. And they are not likely to unite and declare "four legs good two legs bad"
