With the San Francisco 49ers' season over, let's take a look at the impact made by the rookie class:First round: The 49ers traded up to take safety Eric Reid at No. 18 and they have not been disappointed. He made the Pro Bowl after a strong season in which he showed the game is not too big for him. Reid was very polished and he seems like he will be a big part of the team's future for many years.Second round: The 49ers feel very good about tight end Vance McDonald's future.