Separate Aus and NZ knockout series leading to an Aus and NZ "champion" to satisfy both markets.
Aus v NZ champion for ultimate bragging rights.
NFL/super bowl style playoff makes sense to me too. I don't care if the post-season schedules are lopsided. Just have a week off before the not-super bowl and it'll be fine.
i would revert to conferences for good
top three teams make the finals and a wild card game for the fourth.
aus 1 then plays aus 4, aus 2 plays aus 3
mirrored on the NZ side and then after first round there is a cross over
Winner of 1A v 4A plays winner of 2NZ v 3 NZ
Winner of 1 NZ v 4NZ plays winner of 2A v 4A
Honestly, I'd just let everyone enter the post-season, and get experience with elimination matches, with the regular season deciding the rankings.
Elimination 1:
Top two teams get the week off.
6th ranked @ 3rd ranked
5th ranked @ 4th ranked
Elimination 2:
Lower ranked survivor from Elim. 1 @ 1st ranked
Higher ranked survivor from Elim. 1 @ 2nd ranked
Conference final
Lower ranked survivor from Elim. 2 @ higher ranked survivor from Elim. 2
not-super bowl
AUS conference winner vs. NZL conference winner
So, using the 2023 standings, the conference post-seasons would be something like:
Elim. 1:
Rebels (6th) @ Drua (3rd) | Moana (6th) @ Blues (3rd)
Force (5th) @ Reds (4th) | Highlanders (5th) @ Hurricanes (4th)
Elim. 2:
Drua (3rd) @ Brumbies (1st) | Blues (3rd) @ Crusaders (2nd)
Reds (4th) @ Waratahs (2nd) | Hurricanes (4th) @ Chiefs (1st)
Conference final:
Reds (4th) @ Brumbies (1st) | Crusaders (2nd) @ Chiefs (1st)
Winner tries their luck against a beat up Crusaders outfit who have just had to play the Blues and Chiefs in succession. Higher ranked match is on the Saturday and lower ranked match on the Sunday.