A can't miss #1 defenseman doesn't fall to the 9th pick, think about it for a second.
I still maintain that if, as a rule, you keep your top 5 picks but trade your other first rounders for top6/top4 players you like, there will be some years where it will backfire but you'll end up winning most of the years. Still, for this specific one, a 24 and 25 years old, a top 3 defenseman playing on the left side at a 4M cap hit, and a RW with size who scored 20 goals last year with good 2 way ability, at less than 4M for another 3 years (actually in Silverberg's case, the contract is a bit a downside), filling two needs that we have on the current roster, which is a top 4 LD and a top 6 RW, seems like a no brainer to me, and I like our pick, but it's an unknown and will take a few years to contribute to this team. Like another poster said, his most likely potential is to be about Cam Fowler.