Originally Posted by
alimdia
Create new character, buy level boost, now you can do the story at your leisure without worrying about levels.
They have already said they can't reset individual quests due to how their flag system works, they can only reset the whole thing, resetting all flags, which I imagine would probably end up locking duties or zones in the process. At that point might as well just start a new character.
To do what you're asking they would have to completely redesign their quest and quest flag system.