Of the dungeon bosses, the only one I know an obvious class association with is Lilian Voss, and I'd be happy to see her make a return. Otherwise, I am down with whichever of these the can fit neatly into HS. To be honest I was surprised to see Rattlegore with the whole skeleton censorship in China which they could easily have avoided by not using the skeleton boss (which is why I assumed Lord Marrowgar was skipped in KotFT).
Good catch. Blizzard dressed Rattlegore, so he is not a visible skeleton, thus he is OK for china.
@DarthNihilus - I'm against HoFing Divine Spirit (even if Blizzard seems to prefer this solution) because it illustrates Priest's class identity well, and it is clearly Inner Fire that is the problematic card that should be HoF'd, but Blizzard wants to keep. I tried to come up with something that's not ideal but would fix the in the short (but not long) term. That said, "starts at X damage" makes more sense than a damaging battlecry for these cards.
And yes, Northshire Cleric would be more balanced as a 2mana 1/4 or a 3mana 1/6 or something.
Maybe a mechanical change: Ressurect effects should remove the minion from resurrect pool and the ressurected minion will not enter the ressurečt pool, so every minion can be resurected only once.
Fun way to nerf it should be a paladin secret
1 mana - uncorrupt a minion or spell
So tickatus would mill his owner, for example
It can be not the best devk but if it feels bad to play against it is uncool, to
Good catch. Blizzard dressed Rattlegore, so he is not a visible skeleton, thus he is OK for china.
Hearthstone:
WOW: 
You are wrong.
If you HoF Inner Fire, priest will switch to Crazed Alchemist. Or Topsy Turvy. Or a similar future card. Divine Spirit is the bad cultprit here.
Simple and minimalistic balance nerf is to HoF Divine Spirit
Maybe a mechanical change: Ressurect effects should remove the minion from resurrect pool and the ressurected minion will not enter the ressurečt pool, so every minion can be resurected only once.