The issue is, and I will ****ing maintain this would have fixed things, was that we needed better wingers. I was never a fan of Pageau or Brassard as options, in a gun to my head choice I wanted Henrique, but I always thought this team was fine with Sheahan at 3C and finding a better set of wingers so Sullivan didn't shift things around so much and if he did, he couldn't **** it up.
But then he did. He literally got a treat in Brassard, he now uses as a winger.
If they didn't move for Brass, they could have still added better wingers, including Grant and Cullen for the 4th line, with better wingers either would have been fine as a 4C.