I didn't get to watch this one and sadly I won't get to watch many because of my work hours, but I did watch the extended highlights. Some thoughts:
Demko didn't look great on the SHG. I'm not a goalie guy, but it looked to me like his lateral push put him deeper in the net, giving shooters more to look at. It's a bit nitpicky, but I just didn't like how it looked.
Petey's opening goal was fantastic. That is the pass-intercepting predator I want to see.
Kuzmenko continues to produce evidence that he is the real thing.
Connor McDavid is better than your favourite player. Unless your favourite player is Connor McDavid.
That EDM PP goal with the tick-tac-toe was beautiful. I watched it over several times to try to figure out how McDavid was allowed to practically disappear. It didn't look too bad, except that the cross-ice pass-blocker guys never shoulder-checked to see if McDavid had moved. I also kinda think that Leon's pass to McDavid was so good, they may have stolen the idea from Daniel and Henrik.