Igina at this point wouldn't net Krejci alone, never mind Boston adding a 1st. This Iginla trade for a rebuild should have happened 2 years ago to maximize the assets going to Calgary. Now, he's just a rental.
I would do this deal, but I may have my Jarome-tinted glasses on. I`ve wanted him on the Bruins for years. I honestly do think that for a player like Jarome the B`s can afford to lose Krejci, and pop Seguin into the 1c role. I see Jarome being very effective for a few years yet.