I agree that if Kapanen continues to play well with Matthews there is no need to take him off the line. Nylander playing with Kadri would definitely give us 3 complete lines.
4th line should be Gauthier-Lindholm-Johnsson/Leivo.
As much as people don't like Gauthier, I would give him a steady role this season. He is sound defensively, and I would give him one full season under Babcock to see what he can turn him into.
Fianally someone putting Goat on the 4th I thought the 4th line with him played really well in Dallas lots of energy with a good cycle and chances, kept Dallas in their zone for good periods of time, so did Babcock hence giving them icetime. I really cant see why people are putting Jonsson anywhere in the top 6 sorry hes been a huge disappointment and takes dumb penalties he has been absolutely invisible so far, hopefully he can return to form which is why I put him on the 3rd line, Lindholm does not impress me either yet everyone pencils him at 4th line center, sorry I'll take the Goat and Leivo, Brown, Canadian guys that did a great job against Dallas
Nylander, Matthews, Kapanen
Hynan, Tavares, Marner
Marleau, Kadri, Jonsson, because hopefully his game reappears if not Ennis
Leivo, Gauthier, Brown
Use Ennis and Lindholm to replace players that may struggle for now