Yes, if Cerra and Brayshaw play early you can't imagine it will be as part of the midfield rotation. More likely to be coming off the bench and into a forward pocket and flank.With all the talk about Cerra and Brayshaw in Round 1, I say play them as high forwards and let others do the heavy lifting in the middle.
Which means if Cerra and Brayshaw play early the are fighting for a spot with guys like Ballantyne, Grey, Langdon, maybe Tucker or even one of the lower ranked tallish forwards like Kersten or Cox (personally I would keep both Kersten (if fit) and Cox).