Seems that we have some doubts regarding Our bigs.
Well, we won Bronze with Baynes and Reath as 5's and Landale and Kay as 4,s. Baynes is tried-and-true and the others all will be better than their last campaign.
Add, into the mix and competition for spots, Humphries, JLA, Bairstow, Harry Froling, Magnay, Brandt and Simmons and in another 2 years even Perry and Hayes-Brown may throw their hats in.
The only down side I see for the next version of the Boomers is that Baynes may not be avail(health) and Joe may now be in real doubt. Ingles' skill-set can be replaced but not Joe himself (seen several comparisons for Joe's impact on the Boomers - I think of what Teys brought to Adel and the NBL in his tenure. Think also of Greg Hire and Wagstaff).
And with all due respects to Sobey, Goulding and Delly, look at their (likely) replacements, Giddey, Green, Daniels, Proctor(?) and with either White or Cooks for Joe, if required and several other risers, too.