There are two ways teams can improve. One way is through the acquisition of personnel through the draft or free agency. The other way is by the existing players' developing skills. This year, how much the Houston Rockets improve will depend as much on the latter as the former.
Houston is a young squad. Of the rotation players who are currently under contract, Trevor Ariza, who turns 30 on June 30, is senior. Dwight Howard will do so on Dec. 8. Even at that age, players can add skills to their game.
Each member of the rotation has at least one specific area he can develop to become a better overall player.