I believe so, or at the very least it is challenging for it. We have put together some fantastic junior teams in the Harold Matthews/SG Ball but this group are not only exceptionally talented but are drilled and disciplined beyond their age group.
It will probably take another 12 months to properly answer your second question and even then Hayne (and Inu) is a massive anomaly. Once we get a look at how they handle the SG Ball will make things clearer but amongst the cream of this team (Tui Afualo, Josh Curran, Jesse Cronin, Alex Seve, Travis Turnbull, Filia Ukitomanu, PJ Vaigalu - a few of the outside backs are solid prospects as well) I really like what I have seen from Travis Turnbull and Tui Afualo.
Afualo is a human wrecking ball, bucket loads of power and aggression but has the finesse and vision to use his winger well. Turnbull is easily one of the better halves I have seen in this grade. Plays confidently at the line, happy to run, kick or pass and physically I think he has a good build to grow into.