Of all the issues with Icecrown Citadel, the most irritating by far is that Mal’Ganis doesn’t make an appearance. How annoying is that? Especially after you did a whole quest chain in Icecrown which ended with him running off and warning you that, “You’ll never defeat the Lich King without my help!”
I guess he was just being a tosser. Or was he helping by … cheering from the sidelines, or washing his socks, or yelling “grats!” from the safety of his demonic sofa.
Hanging plot threads are very annoying.