If the sharks end up with #1, take Schaefer and that's easy. If they end up #2, I hope they trade down to #4, and get a lot of value for that. Personally I like Misa and Martone over hagens, simply due to size. However, I fully expect they would get one or the other at 4 (likely Martone).
According to
Examining the value of NHL Draft picks - Sound Of Hockey ,
the value drop from #2 to #4 is approximately equivalent to the #20 overall pick. Nashville owns three first round picks: likely a top 4, around #20, and around #30 along with two second rounders. I bet, if they have a clear target, they would be willing to trade one of those picks to move up and get who they want at #2. If the sharks dropped from 2 to 4 and picked up the #20 overall, they could have another very valuable asset to trade for a solid vet D.
This summer, Grier needs to earn his keep. He has dumped all the talent he has (Burns, hertl, karlsson, meier, granny, Blackwood, etc) and acquired all the future assets he could. (aside from some depth picks for guys like sturm, kunin, or ferraro). He now has to be in talent ACQUISITION mode. This means that he has to be looking to add legit NHL talents either through UFA or especially through trade, since SJ is NOT a desirable destination for UFAs. Trade mastery is how DW brought in Jumbo, Burns, Boyle, Karlsson, Heatley, Kane, Dillon, Jones, and many others. Some of those worked out better than others of course, but DW built the 20 year competitive roster through deft drafting and alot of big trades followed by resigning and retaining that talent.
Grier needs to begin to do the same to build the roster.