I think the biggest progress he showed is clear in his output. He's not afraid to create more shots on his own, he does not need to be assisted as much to score. He can create his own shot with much more ease than his rookie season. Now it is still not where it should be or could be, but already he is a pretty great 3rd option and could be a 2nd option for many teams. If he wants to be more he needs to stay healthier, get stronger in his post base and body, to be able to take more higher percentage shots closer to the basket. Need more time. Lets see if he can be either a #1, 2 or 3 in his career.
Then his defense, I think he just doesn't focus on his foul issues. He uses his hands too much, instead of his feet. It's not like he is slow. He can move. He lets his hands bail him out, and that can at times but others lead to fouls or easy blow bys. I want better effort and focus from him on defense next year.