I believe by their very nature all those that are under the TG umbrella; CD, TS, genderqueer, ambigender, gendernoncomformist, etc, are very independent and individualistic. They aren't likely to be hemmed in by societal definitions so it is unlikely that all would settle under the new definitions. This is a group of people who want to define themselves. Debates on what transgenderism means will always have two sides the Dictionary definition or the more personal definition of the individual TG. The arguemnet boils down to which one means more to whom.
As to Candice's points I do believe if a born male cross-dresser identifies as male he is technically by definition cisgender. I mean if we are going by definitions.Perhaps cross-dressing is an overlap between the trans and cis realms?
Or maybe cross-dressing is like a tomato technically a fruit but often thought of as a vegetable. You don't put CD-tomato in a cis-fruit salad with all those cis melons, strawberries, banana, and grapes. No CD-tomatos go better with all those trans-vegetables like trans lettuce, onions, cucumbers, and cabbage, cover it all in dressing. And one thing we know about CDs is that they love dressing. :D