If the Vatican did focus on James the Less, it would bring up all those unpleasant topics about Jesus' family, his father and mother - all reminders that there are serious problems the church has in explaining and reconciling the marriage of Mary & Joseph, and the Jesus mother/father controversy.

James was the first leader of the Jesus movement after Jesus' death and the beginnings of the resurrection cult/beliefs.  Both Peter and Paul had serious disagreements on the nature and course of the kerygma in the formative years of the primitive Jesus movement.