The bottom line is, with Matthews not producing, the PP isn't going to be as lethal. With neither one of those producing, it's going to be tough for Toronto to win games.
What I don't understand about the powerplay is their breakout transitioning into their zone entry. The regroup/drop pass at their defensive blueline, puts the two high players at a standstill at the offensive blueline. Opposing teams simply build a wall at the offensive blueline. That makes a 6 person wall. And, because they are approaching the line with no speed, the defensive players have no need to retreat. It's like the leafs are playing Red Rover. What's most frustrating about this is there's no change being implemented at the entry. They get fancy back in their own end with some different drop passes and looks, but their zone entry remains the same.
I hate dump and chase on the PP but you have to force teams to leave that line. Dump and chase a few times and suddenly, carrying the puck in becomes easier.