Oh dang, you named both my favourites (Heroes Don't Come Home and Enter The Insane: The Rise of Esplin 9466).
The latter, I love for its detail and further insight into how Esplin went from the relatively sympathetic, understandable, and highly intelligent character he was in the Hork-Bajir Chronicles to ... well... Visser Three. XD I accept large sections of it as headcanon.