BH I think there could be a few of these players with Super Rugby experience by the time time the tournament gets underway. With the compulsory resting of key Wallabies during the season, in positions like prop, hooker, half back, No 10 and perhaps fullback some teams will be fielding their third choice players at least on the bench but more than likely for upwards of half a match from time to time.
I have in mind, for example, Klayton Thorn at the Brumbies who will likely get a call up when Nic White"s rest comes up on the roster. He's already had good time in the trials this year and looked comfortably good. Others like McLaughlin-Phillips and Marley Pearce will probably get a run when otherwise that might not have been on the cards this year.
Could be a few others as well.