with every one focusing on horde leaders. have you forgotten this?
Later, Anduin tried to get Velen to see what was happening outside the Exodar. The refugees were unhappy and demanding to see the Prophet; he was needed in the here and now. When Velen turned to face Anduin, he had a sudden vision of a hero in gleaming armor, leading not just the Horde and Alliance, but the dragons and naaru as well in a battle against the Burning Legion. When the refugees started a riot, leading to a fight with the draenei guards, Anduin rushed to Velen, begging him to stop the needless slaughter. Anduin asked what the war against the Legion meant for those fighting outside, and reminded him that every life is a universe to be protected. Wondering how he had become so lost that he must be taught by a mortal child, Velen went outside and, in a booming voice, berated both the refugees and his fellow draenei for what had occurred, walking out onto the blood-soaked ground to help heal the fallen. Realizing that he had become so focused on the future that he had lost sight of the present, he resolved that the draenei would go out into Azeroth and help heal the world.
isnt this also what wrathion wanted? a unifie'd horde and ally?
with all hints pointing towards a burning legion expac also.
and lastly. blizzard did say it would be some one no one expected.