The things I liked about Cata had nothing to do with Cata. Through Firelands and DS, due to lack of other meaningful content I raided. A lot. I mean like... A LOT. By the end of DS I was running 6 to 8 characters through heroic 10m at least part of the way. Every afternoon was a different toon and it was almost always a guild run so we had a blast joking around in Vent. DS wasn't even a good raid, but we had a good time.