Keefe needs to toy with line combos in case the need arises when it matters.
Nylander’s been such a strong driver of play that he could add something to that third line
Exactly. I have no issue with experimenting with the "3 line attack" approach before the playoffs actually start. Tavares needs one of the other Big Four to carry his line, so it makes sense that either Marner or Nylander would stick there.
My only issue is playing Kampf between Kerfoot and Nylander in this configuration. If you're going for a 3 line attack, go for a 3 line attack. This line isn't going to be used in a shutdown orientation, so I don't really know why you need Kampf there. Rather flip him with Engvall.
The small sample of Bunting-Matthews-Kase looked very good, so I'd like to see them get a longer run.