Even though your post is covered with smilies it sounds somewhat downlooking.
I strongly disagree with you that fantasies like the requested should be written by homosexual or transexual writers only.
That´s somewhat narrow minded and could be understood as an advice to stay in ghetto.
Like "Better stick to yourself. People like you are not welcome in the `normal` world."

The idea of a transexual sub came very surprising to me, too. Just
like you, it never crossed my life untill then. But I found out that I´d like it. So I´m on a story right now and it´ll be posted on the library as soon as I´m finished. So you could read it but if you already know that you wouldn´t be able to enjoy it ( which seems to be the case ) you´d better stay off.

Okay, the expressed hopes take a bit of the sting but, just tellin somebody "Do it like me!" isn´t thought thru very well. What if she don´t possess any talent whatsover for writing, huh? To make a very broad analogy
"Why don´t you just get outta the wheelchair and walk like me? Once I started walking I was happy ever since."

Well, at least we know why you don´t write "TS Torture & rape stories".