" Denning, while not totally redeeming himself from the Darknest fiasco, has certainly gone a long ways toward it. Jacen is becoming more and more powerful, and sets up Lumiya and Luke & Mara to face off, to see what happens. Ben is becoming a little "yes man" for Jacen, Han and Leia are now hunted by Jacen for supposedly trying to assassinate Tenel Ka and Allana. Jacen is completely over the edge, the galaxy's "peace" means more to him than the individual, and it is hinted at that there might be a hidden Order of the Sith, in defiance of the One Master, One Student sith rule. Just hinted though... "
— Derrick, 1/25/2014