Will you add an ability or way to change between man to woman and woman to Man whenever you want?
That is already in the game.
Go to Transylvania, to the very left should be a "!" Poke it.
Upon entering talk to the bored guard, go inside the tower and then go UP the stairs twice to reach the second floor, the Body workshop allows you to freely modify your body at a price.
As for Pronouns, press back then press Sanctum, then step on "Personal" I think...