Waiting for a tournament to start and thought I'd post some reactions to legends.
First - character jacks rock. They do better with their prefered Warcaster. They also have a special ability that costs a focus. For Drago, he gets to move 2" after destroying a model. Oh, he also picked up a couple Executioner Axes from desrtroyed Destroyers after a battle.
Second - Warcaster attachments. Khador gets a guard dog. Protectorate gets an assistant priest.
Third - The fluff. There are some big events, and some don't quite go like people thought they might.