To be clear, I am not suggesting the Wallabies coaching staff should take one of our present locks and make him into another Itoje. I am saying that an Itoje style of player is probably what's required to partner with Rodda in the Wallabies second row. That comes down to talent spotting and team selections. If enough effort is put into looking for and developing tall young athletic players to play like a hybrid lock/backrower then maybe one or two will make the grade in time.
There are a few locks already who go some way to being that sort of player, Philip, LSL (Lukhan Salakaia-Loto), Lee-Warner and (Hell) even Hanigan, but they would all need to modify (expand) their games. Philip probably would need to concentrate more on looking for turnover opportunities at the breakdown. LSL (Lukhan Salakaia-Loto) probably isn't as quick as he would need to be and that might not be fixable. L-W seems to be able to do it all but probably would need more experience playing at a higher level, while Hanigan would need to up his physicality. Some of these changes are probably physically not possible, but others surely could improve with specific coaching and skills development at both Super and test level if they make it that far.