As it is, as a mage I'm nearly useless against level 90 mobs in PvE; certainly I stand no chance against more than one opponent at at time in PvE. On average, my spells do 30k damage per hit; most level 90 mobs have upwards of 400,000 hit points; so it takes roughly 13 spell casts to best a level 90 mob. I find it difficult to believe that this is considered acceptable.
Has Blizzard forgotten that mages wear CLOTH armor? Have they forgotten that mages are not meant to absorb damage?
And now, with patch 5.1, they propose to REDUCE the damage that my spells do, REDUCE the damage that my (meager) protective spells absorb, while INCREASING the cost of my spells.
If Blizzard wants to do away with a class, they should have the guts to just do it, and not whittle away at it until no one wants to play the class anymore.