The Penguins could probably use another LW. The Penguins could probably use another defenseman. After all, Kris Letang, Olli Maatta, and Brian Dumoulin are all out with injuries.
No addition would help the team more than "playoff" Matt Murray. He let in a terrible goal in the victory over New Jersey, and he was dreadful in the final moments in the sham outdoor game against Philadelphia. If the Penguins are going to regain championship form, or hell, make the playoffs, Matt Murray needs to be the teams best player.
Even if the rest of the bunch figures it out, Murray will need to pull it together to make a meaningful run.