Sorrowdusk: With exception of part 3 of Grey Moon, the other 3 quests are extremely short imo.
Part 1: 10 mobs on elite i think.
Part 2: Run to shaman holding key, kill! Then what, 5 more mobs?
Part 3: Yes this takes a few min.
Part 4: Invis - run to bridge lever - pull - invis - kill last guy. (1 min max)
Not to mention, the mobs are basic, with exception to hard hitting scorps, there isn't anything that can't be taken out with little to no issue.
Reaver Fate: Has the difficulty been raised? Yes, when it comes to spell dmg from the reaver, the chances of a flawless victory @level is slim, but completion is still near 100%. @ level xp still gives over 1k/min. Not bad for a 1 room raid that doens't require much.
-Bunk
P.S. I understand the importance of XP and balance for quests that may be lacking, but xp isn't everything, unless simply on the mission to reach cap quickly.