Another year at North Carolina would have made Kendall Marshall into a better leader.
Marshall was surrounded with a ridiculous amount of talent. He never had to deal with much pressure because there was four other likely first-round draft picks on his team in Harrison Barnes, Tyler Zeller, John Henson and James McAdoo.
When you have a supporting cast like that in college, it is going to be easier to play point guard. Opposing college teams had to worry about too many other weapons, so Marshall did not get a sense of reality.
Going to the NBA next year, Marshall will probably be a top-10 draft pick. That means he is going to be going to one of the worst teams in the league—he is not going to have an All-Star supporting cast around him. Opposing teams are going to be able to put all their attention on Marshall to expose his weaknesses.
If Marshall stayed another year, he could have gotten a better sense of what it takes to deal with pressure. With a lot of his supporting cast going to the NBA, Marshall would have been the face of the Tar Heels this upcoming season.
It would have been a great year of experience for him. He would have become more mentally tough, which every young player needs when they first get into the NBA.