I'd guess both Zion Williamson and RJ Barrett will be moving on to the NBA - Williamson will of course go #1 and Barrett possibly #2 - but they both seem like great kids who really enjoyed their time at Duke with their team mates and Coach K. I'd bet some small part of them wishes the NBA didn't allow them to go pro so soon, so they could return for another year.
Interesting fact I didn't know about - Barrett's godfather is Hall of Famer Steve Nash.
Here's a video in which Nash interviews his god-son.