I personally do not see where your whine is coming from. I accuired 4part and it's rather amazing in my eyes. Pull dps is a lot more stable and our single target in general is fine. Top dog single target, shortly behind unholy dks pretty much.
What I do agree needs some fixing is our sustained cleave. On bosses like Mistress you can easily see yourself fall off quite fast, cause our aoe is so restricted. Surely 2p helps a bit with fast burst aoe, but something should be done for some faster burst aoe. And no, I don't want to play demonic.
All in all I MUCH prefer this playstyle over the old mastery build. Haste/crit is where it's at and the amount of fury starvations are way fewer than they were before. I can only imagine once I've replaced all shitty old mastery parts how the fury reg will look like.
You shouldn't look too much at warcraftlog-rankings, because if you look at the amount of DH-logs there it's a lot higher than most other classes, and lets face it - most DH's arent amazing or even good to begin with.