Personally, I don't think the Unstable rule suits undead at all. It doesn't match anything we see in any movies, or read about in any books. When the survivors are fighting the Zombie Horde in Walking Dead or Dawn of the Dead, we don't see zombies falling down dead out of sympathy because the one next to them was killed. We don't see Vampires in True Blood or Underworld keeling over (or exploding into flames) when some of their compatriots are destroyed.
And it just doesn't make sense in the game. Why should my Vampire lord perish out of sympathy for some zombies? Why should my Blood Knights fall down dead because some bats were killed?
Further, the Unstable rule prevents Undead units from taking advantage of the Steadfast rule, which benefits every other army. If we get thrashed in combat, we take serious losses even if we're steadfast. If any other unit gets thrashed in combat then, so long as it's steadfast, it takes an unmodified break test. And it can use the generals leadership and get re-rolls from the BSB. Why should we have to take an extra 5-15 casualties while other units are not penalised at all?
I would very much like to see this rule removed altogether for the undead. If it needs balancing out (and I'm not sure it does any more, to be honest) then come up with a replacement rule or just give units a price increase.
And it just doesn't make sense in the game. Why should my Vampire lord perish out of sympathy for some zombies? Why should my Blood Knights fall down dead because some bats were killed?
Further, the Unstable rule prevents Undead units from taking advantage of the Steadfast rule, which benefits every other army. If we get thrashed in combat, we take serious losses even if we're steadfast. If any other unit gets thrashed in combat then, so long as it's steadfast, it takes an unmodified break test. And it can use the generals leadership and get re-rolls from the BSB. Why should we have to take an extra 5-15 casualties while other units are not penalised at all?
I would very much like to see this rule removed altogether for the undead. If it needs balancing out (and I'm not sure it does any more, to be honest) then come up with a replacement rule or just give units a price increase.