Nate is playing great defense.
Yes, the shots aren't falling, but he's trying. He makes some dumb plays, but he's supposed to take (and make) the long-distance shots. I dare to say Davis has been a more "happy-trigger" player this season, and he's supposed to shoot from mid-range to spread the floor, but mostly go to the hole.
When Delonte is back, they will be terrific on both ends. I hope his shooting % goes up, but Delonte/Nate/Daniels/BBD/Shaq is a very good second unit. Insert Perk/Semih/JO and still is one of the best in the NBA.