Polymorph

Q u o t e:
Actually it makes perfect sense. It's right in line with Blizz's philosophy of making dispels more expensive and increasing HP to allow for people to be able to react to situations. Polymorph being so quick as to be almost uninterruptable is fine in Live but doesn't fit into the new model.

GC actually did state that CC's may need to get nerfed since they may become too powerful now that it's harder to dispel them. I see this as a step in the right direction. It will now be risky to cast a CC just like it will be risky to dispel one.

Pretty much. The crowd control spells were never designed around the existence of haste. Asking anyone to interrupt a 1.1 second Polymorph isn't reasonable. Health pools are going to be a lot larger, so control is going to play a larger role than burst compared to the live environment. On the other hand, dispels are more expensive in Cataclysm and you can waste a dispel now if there is nothing there to dispel.

Q u o t e:
So I'm right in my sentiment that, instead of correcting haste affecting utility spells, we now all get to suffer even further exacerbated haste dominance?

I never follow this line of thinking. Yes, making it harder to have a [very fast] cast time requires more haste. But you have to make a big trade off for that haste, such as having a lower crit chance for your damage spells. That seems like a reasonable enough trade off that you'll at least have to consider it.

You can argue that haste is over-valued in PvP because of the risk of interruption, which is much less of a big deal in PvE. Therefore making the cost per stat of haste higher in PvP seems perfectly reasonable. I wouldn't call that "exacerbated dominance." I'd say it's adjusting it to its actual value in PvP compared to other stats.