Don't need it, don't want it. It tells you a number that is all, it doesn't take the controller/keyboard from you and play the game for you. A number simple won't increase a players skill, if they don't know when to use a skill or understand the class a parse won't help them. Just because you can see your output doesn't mean you actually know how to increase output. The game needs a training environment I'll agree, but having something that will lead to abuse and player segregation isn't the way to go.