Despite all the change on their spells during years, sheep is still here. Blink too. (Funny to see mages complaining about DK's trinket when they have the best of all)
Maybe it's the reason?
And no, a 8s CD on polymorph (and fear) won't kill the class.
Imagine if Ele shaman's Hex, or Paladin's repentence have no CD, remove dots, on a different school (Frost? Because why not?).
Imagine all the rage that this change would create.
You're literally the best poster on this entire website by miles Jimjim.