TBH, it looks like a perfectly okay team.
Elite #1C in Matthews
Solid #2C in Kadri
Two star wingers in Marner and Nylander
Top 9 wingers in Hyman, Johnsson, Brown, and Kapanen
Up front, you're left with essentially no #3C and a weak 4th line. But those are not exactly unfixable issues and the only guy who is not at least a #13F at the NHL level is Bracco.
Defensively its weaker, but not all too different than the D we've fielded for the past two years, if you discount the unexpected decline in Gardiner's game due to back issues.
EDIT: On second thought, I'm definitely downplaying the present impact of Jake Muzzin, but I stand by my general point.