Trae Young was an overrated prospect imo. Judging by his summer league, he has bust written all over him (terrible shooting, his greatest strength). I'm pretty sure Trae's athleticism is below average, and if you can't shoot, you won't get anywhere in the NBA.
Personally thought the Mavs hardcore fleeced the Hawks, however, it is only 2 summer league games in (then, he is doing really bad in the summer league).