Eclipse is another problem. From my understanding, we are the only class that isn't doing 100% damage all the time. Having to manage this resource is completely unfair, and giving us a 2 set bonus, 4 set bonus, a channeled spell, and soon a glyph to navigate through it should explain how dumb the mechanic is to begin with.
I went moonkin for about 5 minutes a few weeks ago. Now I've played most every class and have complaints about mechanics with things like Savage Roar, Inquisition, Shadow Orbs, etc. But honestly, the eclipse bar is the absolute worst. it honestly seems like a way to make 2 buttons really 4 buttons but really just making it 2 buttons that take up 4 spots. Absolutely no need.
Can't comment about the pvp survivability, but had to agree with the eclipse comment.