First, I like the last one, it's actually making Iridikron more than a mustache twirling generic villain (HI JAILOR!). He cares enough about his sister to talk things over, even if they're on opposing sides, and tries to warn her from fighting him.
Secondly...Wtf was up with the whole Ysera/Malfurion drama anyway, why did any of it happen? Blizzard asspulls something about Malfurion should have died but Ysera interfered (not the case if you remember the questline...). Then they swap places for...what? What did Ysera do while she was in Azeroth for this time, why was there a