And you can't have a named character do EVERYTHING in the story. The world's too big for that. It's MUCH more realistic to have the sea of empty faces.
And once again, what is the point of you coming in to ask how to make this work if you aren't willing to be 100% accurate with the lore? You break lore if you place your character on a pedestal. If Blizzard doesn't explicitly state something, then it is theory, at best. Nothing more. Saying "It's canon unless Blizzard says it isn't" is not a valid position. Your character is not canon. Don't pretend he or she is. You are simply deluding yourself, and we cannot help you.
This "discussion" has run its course.