Top draft picks are overrated. With 3 picks, we have as much chance (if not more) to end up with a player as talented as Winslow can be.
As Ainge said, GMs fall in love with their pick during draft week.
I personally don't believe in top draft picks. Unless it's the top 2 or 3, there is too much uncertainty. It's just gambling.
As for the nets unprotected pick, I believe Danny offered the 2018 one to Knicks. Not to Charlotte.
Edit : That would be interesting if somebody can calculate the probability of landing a very good to great player with those 3 picks versus a top 10 pick. Any maths geek here?