WorkingClassRugger
Michael Lynagh (62)
If a club based comp is the next to be tried, then I think it should go full FA style. Start with say 120 clubs, either by invitation as the top clubs in various selected competitions, or by opening participation up to bids, and make it knock out. That's 119 games, spread over say 15 or 20 weeks at 8 or 6 games per week, mid-week during and after the Super Rugby season.
In the early stages, play sides that are close geographically so costs are kept to a minimum. Stronger sides will probably play largely reserves in the early stages but will strengthen their sides as the comp progresses. Good for development of younger players as well as increasing exposure to the game nation-wide through more content for the current broadcaster/streaming service. At the end, crown a National Club Champion.
I should say, however, that my preferred model would be based around Super Rugby 'A' teams supplemented by regional or stronger club teams.
Probably a bit too expansive. Alternatively to this is go the Cup route where we take 24-32 teams across the competitions and run pools with games to determine qualification to the Round of 16 and beyond.