Actually, I did a bit ago but forgot to mention with all the other appearance stuff for other specs.
Namely - PlayerConditionID 43949 is probably a big deal because of the quest it ties together with other things. It has the following three values set:
PrevQuest[0]:
Hidden Appearance Unlocked (ignore 'reward' - this is the version of the copy-pasted hidden appearance tracking quest that is for unholy)
PrevQuest[1]:
Special Army of the Dead Summoned (ignore 'reward' again, more copy and paste tracking quests)
ItemID[0]:
The Bonereaper's Hook