Here's a sample failed morale table i would have no problems with for Necrobiotics:1 - 5: The unit will move in a random direction next turn, whatever obscure motive they got.6 - 10: the unit will try to charge the closest enemy next turn, or spend all actions moving toward it.11 - 15: the unit will fire at the closest enemy (or shout wildly if unarmed) for 1 single action next turn, they may do no other actions. If they have more than one ranged weapon, select one.16-20: The unit will fire at the closest unit, friend or foe, for one single action next turn, or shout wildly if unarmed. They may do no other action. If they have more than one ranged weapon, your opponent shall select one.So whatever the unit, failing a Ld check will have consequences, but no longer will they behave like mortals fearful of death or damnation. I would expect necromutants to sometimes charge in no-man's land, or even shoot at their own "comrades", either seen as enemies or to vent off rage. They are still effectively fighting, but tactically dumb without a Nepharite's iron will.