ducksflytogether said:
Washington-Eminger, to a lesser extent Yonkman
Chicago-Babchuk, McCarthy, Kukkonen, Seabrook
Pittsburgh-Orpik, Whitney
CBS is the only one who really needs D. Those prospects are also just the ones off the top of my head. He'll likely fall out of the top 5 if Columbus goes 2nd overall, selected Evgeni Malkin.
Even if CBJ is at 2 and picks Malkin, I don't think Barker falls out of the top 5.
None of those prospects you list are guarantees. Barker is the consensus best d-man and third guy on almost everyones board. I don't think three teams would pass on him in favor of Schremp, Olesz, etc, regardless of their d depth. Maybe one, but not three.
Besides, the CBJ have pretty much played their way out of the 2nd spot. They'll be looking at 1 or 3-5. At one, they'll pick Ovechkin. If Barker falls to CBJ in the 3-5 spots, he's theirs.