Prior, Ava and Cam Smith is a great set of middles.
Martin is a very solid, athletic 2nd row. We then have Mellor, the Sutcliffes and Walters as our other 2nd row options assuming Ward leaves. Even with Ward leaving we would probably need to let another one go.
If Myler leaves, then McClelland will take his place in the squad. What most interests me is, if Dwyer leaves, who'll be Leeming's back up? Burton? I wouldn't like to see McClelland there at this stage in his development. Is Burton ready?