You don't have to know how each class and spec should be gemming, but if you think a hunter gemming mp5 or a priest gemming stamina is right then you probably shouldn't even be raiding.Originally Posted by ProphetNoata
As for your second point, no, achievements can't tell you whether they just die in the fire and get carried or are topping charts while crowd controlling with a pitbull gnawing at their leg. Achievements at the very least means they've seen the content. What they do with this vision is up to them.