(By Rick Bonnell, Inside the NBA) Many of you can't understand why the rookies -- Gerald Henderson and Derrick Brown -- aren't already playing more. In fact, based on what many of you write, the most popular thing Larry Brown could do is start Henderson over Raja Bell.I get it. When you get a new toy, you play with it, not leave it in the box. But the end of practice Thursday was telling. Bell and Boris Diaw played a half-court two-o...