It’s a little early for roster speculation but 3rd and 4th lines need a re-work with some size.
Our third line is actually fine except for two of the three of them need new contracts that will likely be too expensive. I'd counter that the problem with the fourth line is not a size issue, though you'd like to have it, it is that for Rod's system, it is built wrong. What we don't need on that line are "savvy veterans looking for a cup" but youth with speed looking to make their name. Rod's forechecking style needs kids who are fast to get into the zone and willing to throw their bodies into the opponent to retrieve the puck. Veterans who are slow and feel the bumps and bruises more need not apply to the fourth line in this system. We played better in Rod's first year when our fourth line was AHL plus guys than we do now with Stephan and Stastney and Noesen (I love his scoring and PP contribution, but his foot speed is not ideal for Rod's system). When our bottom two lines are fast, they wearout the other team and we reap the benefits in the later parts of the game.
We also need a better set of goalies.