A couple of comments. Missile units only shoot in two ranks. I think you're looking at shooting in 3 ranks. Drop one of the organ guns for a Grudge Thrower w/rune of Accuracy, Burning, and Penetrating. Rock Throwers are much better now with the "premeasure" ability. Also, Defending war machines is less useful now. A character is just likely to die when the crew breaks and is destroyed. I'd take a rune of Spell Eating as well as Spell Breaking, and drop the Slayer. He's got no place to go.