Though, in my experience this team is a 1-minute team. If we fail to kill someone in the first mine, it is almost always going to be a loss. So if we can maximize our burst and sustained damage perhaps we can kill more reliably.
You said yourself. 1min team. Its all out offense or die trying. Don't really need the tank talents.

10% melee damage deduction is not needed as your DKs don't lose to melee cleaves. You are the best cleaves in the game. Unless the other side got 4 warriors or something.

Other blood talents, they are not a game changer but probably not as good as reduce CD on death grip and + disease damage.