Would you like an in-game parser?

[Marcellus_Cassius]

You can already tell if someone isn't pulling their weight, just look at the enmity meter to scout if a DPS is well below his fellows. This number thing, in my opinion, and how much you're doing and this crit for this amount is all garbage. I play with names off, numbers off, and most UI things off. Immersion > obsessing, however I do think having the training dummy give feedback in one way or another, doesn't have to be numbers, is a necessary tool for learning proper rotations.