This occurred to me while watching the Miami/Boston game on TNT. TNT has a nice score display. When someone scores, there is a nice animation of the team's logo in the scoreboard, and then the number flips, updating the score. It happens a moment or two after the ball goes in the basket, and the timing is consistent. This is the right way to display the score.
On the Nets broadcast, there is no animation on the scoreboard, and no consistency with the timing of the score update. Sometimes it happens right after the basket. Sometimes the score doesn't update until the next possession is well underway. Sometimes it doesn't update at all, and then the scoreboard disappears, and won't reappear until after the next commercial break. When a 3-pointer is scored, sometimes the score increases by 3. Other times, the score increases by two, and then by 1. Just not very inconsistent at all.
I would love to see a more advanced scoreboard design with animations. I guess they would also need to hire motivated people to update the score. It seems right now that whoever is doing it is disinterested, or it isn't their main job.