I mean, I don't think Marner/Matthews playing like a 2nd line is going to last, so I am probably less concerned about them than most, but it is still concerning to some degree.
I think having a healthy D will help... Liljegren is super underrated, and Timmins being up to speed will be good.
Step 1. Get a fully healthy team
Step 2. Address issues
Maybe an upgrade on D, but like I said, I think the forwards will work themselves out, and honestly, although Woll hasn't looked great, he has been amazing in some games and I'd just like to see him get more reps before we try to do anything drastic there.