What AVR did is not doable anymore, since Blizzard removed the ability for addons to do the type of "drawing" on the world that it showcased. Other addons like Antiarc's Poison Swapper were just too powerful and forced Blizzard's hand in changing the way rogue poisons work.
Addons have a rich history in World of Warcraft, with many of our favorites gone the way of the dinosaurs. Which addons, for better or worse, do you wish were still in game? Any addons that you miss from the early days like Cosmos and player-made minigames? Sound off in the comments.