ArenaNet:Guild Wars 2 suggestions/Show completed quests

Show completed quests in log (Discussion)
I'd like the option to show in quest log the quests that I have completed, not just the uncompleted ones.


 * Why this is a good idea
 * Can easily tell whether you have not taken a quest or have completed it.
 * Fun to see what you've achieved


 * Why it may not work out
 * Extra coding and tracking?