I think a compelling part of Kon's case is that he was a much more high usage scorer before Duke. It could be that the lack of athleticism caught up to him, but it could also be that he played on an incredibly stacked team that didn't allow for him to be higher usage guy. "Low" usage guys turn into higher one's more than you think at the next level. Kon has a lot of the signs of someone that could do more in the NBA than he did in college.
View: https://www.youtube.com/watch?v=NZ-61pesaSY
That point about him not being able to beat anyone off the dribble really seems like a killer weakness. I see some value in him as a spot up shooter---but don't really think you're looking to draft another Buddy Hield or Luke Kennard in the top 5 or even first half of the lottery.