It definitely seems like Nordstrom is losing his spot. He has been an absolute black hole offensively this season. Obviously you don't expect a lot of offense from that group but they need to be able to hold their own. Kuraly-Acciari-Wagner played extremely well in the first 4 games of the final or so and it was a big help. The middle 6 should be much better this season though. I'm definitely onboard with breaking up Krejci/DeBrusk, I'm not really sure they work that well together. Krejci looked great with a prime Lucic on his LW, while Ritchie isn't that good, he can still be a good offensive player as long as he cuts down the penalties a bit. I'd try:
Marchand-Bergeron-Pastrnak
Ritchie-Krejci-Kase
DeBrusk-Coyle-Bjork
Kuraly-Wagner-Kuhlman
Lindholm/Nordstrom
Would also consider Blidh/Frederic getting a crack at that 4th line. Studnicka may get a look at some point as well.
Marchand-Bergeron-Pastrnak
Ritchie-Krejci-Kase
DeBrusk-Coyle-Bjork
Kuraly-Wagner-Kuhlman
Lindholm/Nordstrom
Would also consider Blidh/Frederic getting a crack at that 4th line. Studnicka may get a look at some point as well.