Like just about every Blizzard fanboy these days, I have been playing a lot of Diablo III. And while playing it, I have indeed been looking to complete achievements whenever I can. A lot of Diablo achievements are similar to WoW achievements, but one category Diablo III has that WoW doesn't is class achievements.
This is understandable. There are a lot of reasons WoW doesn't have class achievements. It's harder to level multiple characters and get them all. It's harder to implement flashy achievements that could force you to put a group at a disadvantage. People could focus on gaining achievement points rather than winning a battle. That said, I still think there's some merit to the idea.
One of the best reasons to have class achievements, I think, is as a possible teaching tool. There's still not a really solid, in-game way of teaching you how to play your class, but a few achievements that rewarded you for using certain skills in certain ways might just be a good start. Sure, you could just cheese them anyway, but if you tried to get them legitimately, you could very well find yourself learning how to play along the way. This week, we'll brainstorm a few death knight achievements and see how they could help a lot of people play the class better.