The best thing so far for Davion Mitchell, judging solely on the Summer League is that, he knows where to be on the court both offensively and defensively; and that most rookies catch the ball AND THEN think about what to do, versus Mitchell is usually decisive enough to make a move as he catches and more often than not he made the right decision.
Those are things you can kind of predict from the Summer League better than any other skill-based things.