One of the greatest changes Guild Wars 2 promises to bring to MMOs is to break the holy trinity of group roles. Would you dare say that this is true for any class/spec combination, or does it contain some modifications? An example would be; could 5 skilled Guardians using the same weapon and traits do a dungeon?
<[ANet]JonathanSharp> -Absolutely, they could do it with the same weapons and traits. If you changed out your weapons and traits, you'd have more diversity, and would make it easier on yourself.