You're not the only one. Like aceboon said, I also said during the tourney run that if DD played so well that we won a championship, it would be worth losing him to the NBA. If the projections are accurate though, I think a guy like Deandre who struggles with confidence at times and still needs to add a good amount of strength is taking a big chance if he's not a lock for a guaranteed contract.
He's a great kid and I wish him the absolute best but as a borderline 1st round pick I feel he had a lot to gain by adding weight and dominating during his senior season. He has lottery pick potential and may have pushed his chips to the center of the table a year early.