From Gil's blog:
When it’s all said and done, in four years Nick will be a top two player in his draft class. This kid can score so easy. He makes it look so easy. I told you before, I argue with my dad about it. I say if you have to pick another two-guard that reminds you of him, I say he has the ability skills to be a Kobe. Not the mindset, he doesn’t have the killer instinct. But, skill-wise, when it comes down to moving with the ball … whoo! If you would have seen that play in Cleveland where he was going one way, shook up Gibson and then dunked on LeBron … his natural ability is really, really good. His raw talent is very polished. He is one of those young emotional players though. His play depends on his emotions. Like, if he’s feeling good today, he might have a good game. If he’s feeling bad because he missed a couple shots, he’s going to have a bad game. Once he gets past all that … that’s why I say, give him four years, he’ll be top two in his class.
He’ll definitely be the best guard in his class. If you understand what I’m talking about, his basketball skill level is that high. What Kobe does out there? He can do everything that Kobe does. A young Kobe. The way he moves, the way he posts up, the way he fades away, the way he slashes through the lane, his instincts when he gets hit … he just has everything to be great. He has the tools to be great. He doesn’t lack anything. The only thing he probably lacks is speed, but Kobe and Jordan didn’t have no damn super speed. But the checklist is checked off: first step, step-back, 1-2 pull-up, finishes well, jumps off one, jumps off two … you can’t find anyone more complete.
That's some high praise right there. No doubt Nick has talent, but like Gil said, Nick simply doesn't have the killer instinct to be a star right now. I'm not sure if he'll ever develop the right mentality, if it can even be developed, I just think he's the type of person that wears his emotions on his sleeve.