I love this buff for the Random Heroic Dungeon, but I was thinking wouldn't it be nice if they added several other buffs that you had a chance to get? To really make it a Luck of the Draw. As appose to the 5% Damage/Healing buff. Like lets say, you have a chance to get 1 extra badge per boss, and maybe 1 extra Shard per boss if you have WG Buff? Just an idea, and the chances to get one of these buffs would be pretty low so when you did see it, it'd be pretty amazing.
The reason I think this would be a good idea, is because my alt is a dps class and on my battlegroup it is really hard to either put together a group to farm random or heroics, or when you do find one it falls apart real fast, also the ques to get into one solo is roughly 20 minutes or more.