I like the lines currently as constructed, team is really gelling and playing well, so minimal disruption in my opinion is the best course of action. So when Matty comes back I think the following could work:
Hyman-Tavares-Marner
Leivo-
Matthews-Ennis
Marleau-Kadri-Kappy
Johnson-Lindholm-Brown
The 4th line (above) based on last game it appeared was really shutting down CBJs top line. So if that continues to work well, wow, we have 3 other lines that would get favorable matchups and eat up the opposition. Matthews is a 'slight' upgrade on the GOAT
. I know Ennis earlier in the year struggled with Matthews, but he's picking it up and Leivo can become that Board battler/puck recovery guy on that line that Babs likes on every line.
IF Nylander does sign, unfortunately I see Ennis sitting since his game is the skill, offensive guy on that line not the 'puck retriever'. So that line could be Leivo-Matthews-Nylander.
Anyway, enjoying our team right now and excited at the possibilities of more once we have our top guns back.