With a new coach in the mix and a host of either unproven or brand new players, the Anaheim Ducks lineup is surely subject to change from seasons past. Certainly, certain combinations worked well and could be revisited. However, with a host of younger players being shuffled through the deck, the incoming coach may also wish to insulate them somewhat from certain situations. That is to say, some of the players may require sheltering. Particularly against bigger, more physical, teams.
With respect to team building, it makes some sense to run multiple five-man units, each with a different playing style.