PITTSBURGH — So, is it time to end the Jason Robertson-to-Pittsburgh talk?I’m not so sure.The Penguins are still very much open to acquiring Robertson, whom they believe could be a short- and long-term building block for president/GM Kyle Dubas’ vision.The Penguins, as previously reported, believe there is a real chance Robertson would agree to play in Pittsburgh. Trading for his brother, Nick Robertson, doesn’t figure to hurt the cause.Sources within the Penguins organization, who, as with all of the sources in this story, spoke on condition of anonymity to discuss private information, believe Dallas is holding out hope of signing Robertson, a restricted free agent, to a long-term deal. I sense that the Penguins wanted to engage the Stars on Robertson, but Stars GM Jim Nill never let talks get serious. Not yet, anyway.As the Seattle Kraken were reminded, the Penguins only have so much power in this situation. It’s up to Robertson, who would need to be willing to sign a contract with any team he’s traded to, and, just as much, up to the Stars. Robertson filed for arbitration on Sunday, making him ineligible for an offer sheet.If the Stars come calling, Dubas won’t hesitate to make a substantial offer for a player he’s long coveted. And if Dubas gets to make that hoffer, there is a growing belief in the Penguins organization that Robertson would be happy to come to Pittsburgh.A familiar approachIt’s been a strange offseason for the Penguins. Dubas has been transparent about his desire for a big deal and sliding up in the draft, neither of which he accomplished.Even if that big deal doesn’t materialize, it sure doesn’t sound like tanking will be part of Dubas’ plan.A team source told me Dubas, as he has done before, is picking up as many “good but cheap” players to surround Sidney Crosby and Evgeni Malkin with reasonably good teammates at a bargain. The Penguins want to add capable NHL players until they can land extremely capable NHL players.