Why carry 8? Providence is an hour away. There is no reason to have a young player sitting in the press box in Boston when they could be playing in Providence
Maybe if you go on a road trip you call up one more player for that
We carried Kampfer for quite sometime, it gets them practices with the big club, gets them familiarity with the other top 6 defencemen, more chemistry right away, they get to watch from the press box with Sweeney and be shown the tendencies of his potential partner so he can anticipate what is going to happen, say Boychuck likes to make a contested d-d pass its the little things that add up.
Johnson is no young, but there is really no need for him in providence plus it make 4 d pairs for morning skate and practice.