Made A quick mock lineup based on no trades materializing and adding depth.
Kubalik - Larkin - Raymond
Rasmussen - Copp - Fabbri
Berggren - Kasper - Perron
Soderblom - Veleno - Hathaway
Zadina/Chiasson
Walman - Seider
Edvinsson - Maatta
Chiarot - Schenn
Oesterle
Husso
Hill
This is a team that would take a nice step forward. Mostly focused on developing the young guys some more and putting them in big roles, may not make the playoffs but will be closer to Buffalo's performance this year. Hill and Schenn are guys I think add wins just from having more depth at d and more capable backup goaltending. Hathaway for much needed grit.
That team still looks bottom 5 or bottom 6 to me.
After the wings traded Vrana, Bert, Sunny, and Hronek after having lost Rasmussen and Fabbri to injuries they were the 3rd worst team in the league. All your roster suggestion does is replace Oesterle and Lindstrom with Schenn, and Erne with Hathaway.
Are you expecting Raymond to turn into Mitch Marner and put up 90+ points in his 3rd season? Are Kubalik and Copp putting up 25 goals and 60 points next year?
Kasper and Edvinsson are great prospects. No doubt about that. But unless Kasper puts up 50 points and Edvinsson nears Seider's rookie production that team is going nowhere but backwards from this season.