Tyrande - Obessed with her husband, and has done nothing of late that defines her as a leader.
Malfurion - Okay character I guess.
Anduin - The only sensible character in the Alliance. He feels like a leader with a backstory that roots him in that position well.
Genn Greymane - The worst character in the Alliance. Started a war against the Horde over his son during the -biggest- Legion invasion -ever-. Thats a war crime.
Geblin Mechatorque - Useless leader. Does absolutely nothing but this is blamed on Blizzard and not actual lore.
Muradin, Moira, and the other guy - They don't feel like a council. You really just see Muradin issuing out most commands.
Aysa - Defected from the Alliance ....but somehow is still the leader of the Tushui..??
Jaina Proudmoore - Wonderful leader. People mistake her anger against the Horde for being crazy when it is abolsutely justified by the amounts of civilians in Theramore and Dalaran they've killed.
Prophet Velen - Says he has visions but when they happen, they're suddenly "new" to him. He's also pretty useless and a grey character. He should stay a Prophet and should've had Maraad been the Alliance leader of the Draenei.