I believe the revamp might have been done because of Bend Will, Battle Fury, and the Bonemold and carved Nordic armor (which added two other "paths"). But I wouldn't be surprised if it was Battle Fury that really changed things. It affects all allies, and really, any shout, power, or spell and makes your allies/followers stronger is going to be perfect for a commander of any skill.
I believe the revamp might have been done because of Bend Will, Battle Fury, and the Bonemold and carved Nordic armor (which added two other "paths"). But I wouldn't be surprised if it was Battle Fury that really changed things. It affects all allies, and really, any shout, power, or spell and makes your allies/followers stronger is going to be perfect for a commander of any skill.