I found them to be written in a simplistic, overly crude style. They were aiming for a Nietzschean meritocracy with an internal power struggle due to their leader being seriously ill, and instead were written like ineffectual Saturday morning cartoon villains. (Hay guyz, let's burn down a town, crucify almost everyone, randomly cripple some of the survivors, and then pick a random person to go tell the world about it!). Aside from the (brilliantly written) story in Lonesome Road, just about every time I encountered the Legion they were simply being dicks for the sake of being dicks. The Legion writing was by far the weakest of any of the sides, and really felt like it was one dimensional and boring.