Try a different spec for sure.
I know a lot of people who were disappointed in their spec's changes, and then found another spec that they liked even better.
In general though, you are speaking from a very biased view point. "Class abilities" is not something that has ever been focused on since Classic maybe.
Spec rotation and ability to do their role is all that matters, and while they removed a lot of odds and ends in the situational ability/utility department, the actual playstyle has shifted to one that is much more active for most of the specs I've played.
Especially tanks, since CDs scale with Haste.
Maybe try a role you wouldn't have considered before as well?
I was with you before I played the beta, but after 3+ weeks played across 5 110s, I can comfortably say that nothing about the prune matters and the game plays better than I could imagine with the new rotation overhauls.