Deathwing was probably the most boring villain ever. Arthas was a far more interesting villain. I would even say Garrosh, while pretty pathetic, is more interesting than Deathwing was. In Wrath, you saw LK quite often while questing and doing dungeons. Not to mention there was the buildup in Vanilla and BC that led to Wrath. At least with Garrosh, we could see, over time, that his thirst for power would eventually be his downfall. We had some build up to where we are now in 5.4. Deathwing felt like a villain that was pick at random from a hat full of names. There wasn't any real build up to his character, and I felt the lore to be lacking. I didn't enjoy the 5 man heroics at the start of the expansion. I don't mind CC and as a PVP'r I generally enjoy it, but it became monotonous in the first 5 mans. The dungeons had way too much trash and really took too long to complete.