Line of progression / when is a guy a gurl?

[Florian]

Maybe we could start a rating system-
0 is a man who is a man.
1 is a man who occasionally wears women's clothes as a turn-on
2 is a man who wears women's clothes in special TV/TS clubs
3 is a man/woman who wears women's clothes all the time - it's already getting difficult to use gender-specific nomenclature
etc etc up to
10 where the SRS/GRS/sex-change op. has taken place, and the result is 100% woman.

The problem as I see it is that sexuality is in the brain, not between the legs, so maybe we need to drop guy/girl and man/woman, as Franalexes says:

"Now understand that we TS girls know that we were born already wired as girls."

But what about those on this forum who get a thrill from a pre-op but not a post-op?
Hasn't anybody written a thesis on this?