My issue with his outside shot is I don't like the mechanics at all the ball is too low and he pushes it. Also consider he has very limited range in college, he's not out there making 3's 3 feet beyond the college line he's shooting 30% being dared to shoot, from the college line. Yes he can get better at that and yes it's perfectly normal for shooters to extend their range year over year in the NBA, happens all the time, but the knock on Barrett coming into Duke was his outside shot and it's proven to be pretty clear that's still the knock now. He's a better defender than i thought, better playmaker than I thought(4.3 A to 3.2 TO ratio though not great) but he is what we thought he was as a shooter.
He's clearly a top 3 or 4 prospect in this draft but there's definitely concerns about how good he'll be if he can't fix that shot. Right now he's a scorer, he takes lots of shots, he can get into the paint, he draws fouls, he does lots well but that shooting is a real weakness for him right now.