Philly played terrible hockey during the playoffs, and still beat Montreal.
I think that's a good indicator of how far away the Habs are from true contention.
Yes they could use a high end finisher, but just look at the centres you listed. Suzuki, Kotkaniemi, Domi, Danault. Deep, but lacking a true #1 C, which is far more important to winning vs a top winger.