#13 - July 11, 2011, 6:28 p.m.
Yes, you can still earn the
Insane In The Membrane achievement, which grants the title.
Cataclysm made some aspects of it a bit easier, and some even more insane than before. Ravenholdt reputation in particular, if you didn't work on it prior to 4.0, is simply punishing.
Have fun out there!