Vlasic only started seeing significant PP time last season. The Sharks have the 6th ranked PP in the league so far this season, the 6th ranked PP in the league last season, and are 5th with those two seasons aggregated together. The season before that (when Vlasic was getting <1:00/game on the PP), they were 19th.
This year, where Vlasic is getting, by far, the most PP time of his career, his numbers have skyrocketed. With only 41GP, he's already topped his career high in points, and is two away from his goals. He's on pace for 13G and 46P. Now that he's finally being awarded a real chance on the Sharks PP (a tough proposition on a team that's had Burns and Boyle for so long), he's shining.
He's one of the best 20 defensemen in the league, and he's only 28. He'd instantly become our new #1 defenseman (yes, better than Carlson). You're crazy if you wouldn't get excited at the concept of Vlasic on this team.