Late first round picks are a crap-shoot, the odds are any guy drafted 25-30 will never amount to much in the NBA. I'm fine taking a shot on 6'6 210 pound good athlete with a 6'11 wingspan who plays hard.
If you're the Celtics, you've now taken three different 6'6 wing plays in the last three drafts. Hugo at #28, Baylor at #30 and Walsh at #37. They are different styles of player, but the hope is that one of them emerges into at least a rotation player long term.