Clearly Dusty, our biggest X Factor and big stage player.
Both of our bookends have enough depth to cover the loss of ONE key player (Jack/Lynch forward, Rance/Grimes/Astbury in defence). Plenty of mids around and some depth players who could have a good crack. Heck even the ruck is deep enough between Soldo, Nank, Chol, Balta and CCJ!
But Dusty when it matters is the key, that's for sure.