Which is why I think Wennberg will be 4th line bound if and when Chytil returns.
He can really play that shutdown game and a 4th of Goody-Weenberg-Vesey is basically a 3B line. Thats real depth you have no problem rolling. It also allows them to manage the PK times of all 3 of them a little easier. It allows some flexibility within the games to double shift Wennberg for Chytil when things get tight. You can put the current 3rd line back together in a pinch and theres no adjustment period.
Cuylle-Chytil-Kakko should control the puck well and get chances, if they can score like a real 2nd line and continue to not give up much that would be a huge difference maker. Even if its just Chytil popping in a wrister every other game. The even strength metrics would easily get a boost. All things being equal, if they got that type of production out of that line with a little help from the 4th, the Rangers will be very tough to beat.