[In the early 1990s, the Dallas Mavericks drafted a dream nucleus of Jim Jackson, Jamal Mashburn, and Jason Kidd. The Maverick marketeers stamped the trio with the Texas-tinged name of “the Triple J Ranch,” and big things were expected in Reunion Arena for years to come. But, by 1997, the Three J’s were all gone, victims of a fourth “J": jealousy. Rathe…