I think one of the big issues for the depth scoring is the blueline's inability to create beyond the top pairing.
Right now Ekholm and Bouchard are more or less stapled to McDrai, while Kulak and Vinny play solid defence, but always make the safe when they get the puck; and well... here's the best visualisation of Nurse-Ceci I can find:
View attachment 869070
I don't mind tossing more minutes at Kulak-Vinny with how they've been playing, but I think you need to look at Nurse playing with Stecher or Broberg on the 3rd pairing and hope they can deliver an offensive pulse of any kind.
Up front; with Drai injured, I don't mind going to the hero line. However Henrique's injury does toss a wrench into the usual plan. Still, I think you can make it work...
McDrai-Hyman
RNH-McLeod-Kane
Janmark-Ryan-Foegele
Holloway-Henrique-Perry
McLeod's been mostly invisible these playoffs, but his defensive play has still been rock solid. Plus his skating and ability to get the puck going the right way complements RNH and Kane the best of the remaining (healthy) options.
Otherwise, Janmark-Ryan is a solid defensive combo, and Holloway gets put with two willy vets.
Which is the 3rd or 4th line depends on the health of Henrique's ankle. At the moment I'd say it's the Janmark-Ryan line.