Vincenzo Arelliti
He Can't Play Center
I haven't looked at Shattenkirk's charts, but my guess is that they would be slightly different. Hitchcock generally tries to get him out there with Tarasenko against the most favorable match-ups he can manage. Tarasenko seems to be given some leeway to freelance a bit when he's out there, or he just does it, and I think Shattenkirk gets the same treatment.
Pietrangelo is typically out there against the best players Hitchcock can manage to get him out there against, and he's tasked with a much more defensive role. Hitchcock generally doesn't want open play when the other team's dangerous players are on the ice (or perhaps ever, but sometimes he recognizes the need to take some chances when goals are needed). Not sure measuring his chart against Shattenkirks would really be an apples-to-apples comparison, in spite of them playing in the same system. Parayko's chart would probably be a better comparison since his role is more similar to Pietrangelo's, but there's not nearly as much shot data since this is his first year.
As far as Hitch vs Pietrangelo goes, Pietrangelo took a whole lot of chances to create offense in juniors. He was basically a 4th forward out there, and he played all over the ice (especially in Niagra). After witnessing that, I have a lot of trouble believing that he's evolved into someone whose natural instincts are now to play a much more reserved positional game.
This is a great point that I had completely forgotten about. Unless we're getting blown away with a deal Matthews+Draisaitl-level, I wouldn't consider ever moving Petro. Luckily, I don't think management does either.