The dev logged in a Druid and began explaining that Blizzard has been working hard trying to ensure that each character is not pigeon holed into a specific role, but at the same, retains its uniqueness. The Druid he was playing for example has the ability to change into different animals. He could change into a bear for more effective defense while he was fighting or a panther that would allow him to go into stealth mode and deal more damage but at the expense of less armor protection for himself.