Nesmith pretty clearly projects to be this team's starting SG or SF (whatever Brown isn't playing) in due time. A lot of people don't like taking players who aren't Freshmen since you want the most potential possible, but having a two-year guy like Nesmith kind-of hits that sweet spot of potential and ability to contribute now.
In 5 years, he may not be the best player from this draft, but I'd be very surprised if he isn't better than at least 5 players taken in front of him. With his shooting, measurables, and attitude, he would really have to fall off a cliff to totally bust.