I intentionally left out abilities unique to Combat and Subtlety as I haven't played those specs this expansion. Revealing Strike could use a mention, but for me personally it's more that I don't find the ability fun. I left out talent abilities also. Talent abilities are hard to discuss. On a tier you might have 1 passive and 2 activated abilities. You could choose the passive ability, but as the expansion unfolds we find out that one of the two activated abilities usually wins out in most areas. Thus you start feeling you should take it. The lvl 30 and 60 tier comes to mind, although I can make good points for why Combat Readiness isn't bloat, and Shadowstep is super fun.
Going forward, imagine if Anticipation became baseline and they added an activated ability in its place. That's another ability to our hotkeys, along with whatever abilities they give us the next expansion. I'm concerned how it's going to unfold.