Fearless units are immune to damage for losing an assault, both the additional hits and being wiped out if already broken, for ending a withdrawal within 15cm of the enemy, and from the damage inflicted by Blast Markers if broken.
Expendable units do not generate a Blast Marker when they are destroyed or hit by a Disrupt weapon, that is it.
Carnifexes not only are expendable but they are also Fearless, and led by Hive Tyrants the entire Swarm then becomes fearless. Even if an opponent manages to break this Swarm in an assault the Nid player can leave it right where it is as about the only thing the Swarm cannot do is initiate an assault. So once they have established themselves in a position they are there to stay. Further, the Nid player can safely 'withdraw' the Swarm anywhere they wish as being broken isn't really all that bad for this type Swarm. With the Nid +2 Rally they are more then likely going to rally adding a further headache to the opponent as the formation will more then likely be in their face when they do. In effect they cannot really be stopped, unlike a Swarm of expendable creatures which can.
Making Carnifexes easier to spawn back would only make the above formation even worse to have to deal with then it is already.
Having both used it and faced it before the changes, and once since the changes, it is a powerful formation that can only be stopped if it is cut to pieces.
I disagree that they should be cheaper to spawn back then they are.
Jaldon
