Cleared this for the first time last night. Wow that trash was brutal. I clearly need to work on my CC macros.

One comment that I don't think has been mentioned yet: On Ertan, if you stack on top of the boss you don't get the slow debuff from the tornadoes. If you are a little bit out, you'll get the slow debuff causing your cast times to go way up. I can't think of any downside from stacking on the boss permanently unless you are a hunter.