If the Penguins want to get better this offseason, upgrading their blueline is a big, huge, obvious choice. GM Kyle Dubas admitted as much last month at his end-of-season press conference:
Dubas said the blue line is a major area of focus throughout the organization. When asked, he specifically mentioned the left side, which has been a problem. Especially after moving Marcus Pettersson to Vancouver.
The Penguins currently have Ryan Graves, Ryan Shea and Vladislav Kolyachonok on the roster, who have all gotten some level of opportunity to establish themselves. Dubas wants them to keep taking steps.