To me it seems like they try too many passes and don't go to the net. They have a lot of skilled guys, so it makes sense that they want to set up pretty plays, but it clearly doesn't work for this team. I feel like they need to drive to the net, take shots and go for rebounds. Create a bit of chaos out there and not let the opposition set up defensively.
SDA has a nice shot but he won't use it, so teams don't even have to worry about it. He'll just hold on to the puck for a while and then turn it over. I'd be quite fine with seeing Parker-Jones out in front of the net a bit. He clearly doesn't have the skill of some of the others, but, again, they're not doing anything out there on the PP so they might as well try something else. At least to mix it up.
I wouldn't mind seeing Fraser out on the point the odd time. He has a hard shot when he lets it rip and if you have people around the net looking to deflect and/or get a rebound, it might add another dimension.
It's really baffling that with the skill (Merkley, SDA, Robertson in particular) that the PP is so ineffective. The pretty passes for pretty goals are nice when they work, but it most often doesn't (16th or 17th overall in PP, I believe) so I'd like to see them create bit of chaos and really drive to the net to try to make something happen. Put pressure on the other team and see if they make mistakes. The Petes PP setup seems too predictable, slow and easy for decent teams to defend against. Try to get those opposing 4 players scrambling a bit and more space will open up. That's only my uneducated, fans opinion, however.