Why would they nerf mage… It has one of the most interesting potential variety of decks
No minion
sif
arcwing / draenei
Casino mage (use all discovers and that new 4 mana card/excavate)
Lightshow mage
paladin tourist whatever
For those that like the competitive side of things theres
elemental
big spell
If anything they should buff other classes to have the variety mage now has.