True, bottom 6 and PK have continued to at least work hard.
What's left is bottom 6, D corps (except JMo), goaltending. Helle didn't drop off nearly as soon, but he is not his usual reliable self recently. He has the same appearance as he did for a time last year of not being ready at puck drop. He gives up 1-2 early goals and then settles in the rest of the way.
How much is the top 6 trouble about lack of effort? We see signs of at least hard work from at least some of them. As you point out, Ehlers and PLD are looking better and were probably playing through a recovery from their injuries. We even had Ehlers fighting to get the team fired up. Didn't work and I hope he doesn't do that anymore - or at least picks a better matched opponent next time.
So we can name 3 of the top 6 Nik, PLD and Nino who are putting out. Wheeler I think works, tries, he just doesn't have enough left in the tank. That just leaves Scheif and KC. They both seem to be avoiding contact more than usual. Could they be playing hurt and cautious?
I'm just thrashing around here trying to figure it out. Looking for answers. I wouldn't want to be on the coaching staff or management.