I like the idea of having "duos" set in stone (Desharnais/Pacioretty, Plek/Gionta, Eller/Galchenyuk) and then having versatile rovers who allow the coach to shuffle lines when needed. This is where I like Gallagher/Prust/Bourque as all three can be used in different situations. Briere is a vet and should be able to fit in wherever he falls.