Personally, I wont go on a nerdrage until I see the mage changes. The severity of the Juggernaut nerf is decided by those.
Let the nerdrage begin.
* Arcane Brilliance now costs 26% of base mana, down from 31% of base mana.
* Counterspell no longer generates a high amount of threat.
* Ice Shards (Rank 2) effect now lasts 2 sec, up from 1.5 sec.