I'm having a significantly difficult time with the new changes to mages... I was Arcane for a LONG time, and I was generally pretty high on the DPS, almost always in the top 3, just from getting hit capped and cranking out my spell damage. I didn't like crit, cause depending on occasional extra damage didn't appeal to me, and it also generated a lot of aggro.
Now, in order to do any real damage, I have to hope that I crit... It's irratating. I hate the fact that my DPS is contingent on a proc that requires me to crit... something I worked hard to not need.