Originally Posted by
Mihalik
The Humans put out the bulk of the Alliance military and economy. They are the ones that have to run around Azeroth to stamp out brushfires and patch up their collapsing Allies. Humans took the worst beating both during the Third War and the Cataclysm and were still required by everyone else to step up and handle shit.
The Night Elves are terribly shortsighted, unambitious and utterly lack political insight, not to mention proven not to be able to defend themselves from the Horde.
The Dwarfs are highly tied up in internal politicking and have historically always relied on the Humans to lead.
The Gnomes are Gnomes.
The Draenei have an almost insignificant tiny population, not to mention being new to Azeroth.
The Worgen are in the similar situation as the Draenei and the Gnomes, but their issues are further compounded by their history of unreliability.
The Alliance needs a centralized command structure, the primary contributor is logical to have a leadership position.
Every military Alliance EVER in history, always had someone take overall command. It's a strategic, tactical and political necessity.
Can you imagine an Alliance army in the field being commanded by 6 different dudes in the same time? Clusterfuck.