Yeah, and most classes have a way to avoid or deal with not having to kill mobs now.
Warrior: Shockwave / Other Stuns or Disorients
Paladin: Choose a Bubble, any bubble. Stuns.
Death Knight: Army of the Dead / Minion / Howling Blast
Hunter: Camouflage
Shaman: Hex and I haven't played much Shaman but they find ways.
Rogue: Stealth
Monk: Probably something, my monk is only level 42.
Druid: Prowl, Nature's Grasp, Entangling Roots
Mage: Greater Invisibility, Dragons Breath, Blink, Ice Barrier, Polymorph
Warlock: Minion Distraction, Demonic Gates
Priest: PW Shield, Psychic Scream
Lel.