My wishlist would be Kunin, Olivier and a capable RHD. The team doesn't "need" two more forwards obviously, I'm just being greedy here. I do wonder about Geekie a little bit. I don't think he's a complete lock to be an everyday player in the playoffs with the way things have been trending lately. Atkinson would seem to be the automatic 13th forward with any new addition.
Atkinson, Goncalves, even Sheary (if he's still around by then), Howard etc gives you enough offensive depth to fill holes if any skill guys get injured. The battle tested guys will be tougher to account for, hence Kunin and Olivier.
Kunin was a high pick and started out putting up solid numbers early in his career, can't fault him for not producing a ton with the abysmal Sharks. But as a RH shot, he could be dynamite alongside Cirelli and Hagel even though he isn't viewed as a top 6 player.