*nod* that sounds about right. I feel that there is another element as well.

In old paradigm, transsexual was defined as what a person had either done or intend to do with their body. This is inherently classist. In the new paradigm, the defining factor of transsexual seems to be more dependent on ones actual feelings about their body, and how one wishes their body to be perceived.

Also, by separating out the gender presentation and body sex aspects, it grants transsexual women same range of presentation options afforded to cissexual women. And thus, as you say, help to counter those stereotype expectations.