I agree AST needs a lot of changes. My AST is level 60 (ilvl 166) and I'm pretty confident that my level 51 WHM (ilvl 130) heals more effectively than my AST does with less mana used. Now, I fully understand that AST heal potencies are lower, but the fact that my WHM is 9 levels lower and 36 ilvls lower and heals better is very concerning.