Ok, Let's look at a 24 team comp from a point of broadcasting and Broadcast rights.
First, the conditions... 24 Clubs set in 4 conferences of 6 teams. I'll name them after players for S & Gs.
Messenger: Roosters, Souths, Titans, WA, NZ2 (Orcas maybe), Dragons
Meninga: Broncos, Cowboys, Sharks, Tigers, Canberra, PNG
Jones (or some other Kiwi/Maori player): Warriors, Sea Eagles, Dogs, Storm, Dolphins, CC
Coote: Knights, Parra, Panthers, Bris 3, Melb 2, Adelaide
Each conference has at least one rivalry or derby. Every Conference has NSW, QLD and an Affiliate state or country
Noting that both FTA and PTV will have limited ability to show all games live and uninterrupted due to double ups in the schedule. FTA could show games by region (eg. Ch 9 in Perth would show specifically Perth games + a few others, Melb would broadcast both Melb teams + a few "Games of the week" etc) or sell of broadcast rights for each individual conference or specific clubs to various FTA providers (don't rely solely on Ch 9. This also makes the market more competitive as the game day broadcast needs to be spectacular or you could be losing more content to a rival).
PTV would have to set up multiple channels (Fox League 1, 2 and possibly 3) and the broadcast would have to rely heavily on streaming (eg, pick the games you want to watch), replay others you're not overly interested in.
Play each team in your conference twice, then the other 12 games are made up of teams outside the conference. Yes, this means that you don't play everyone in the year; however this is what happens in the NFL, you just rotate through the teams outside your conference that you would play against.
Stand alone Rep/ International weeks at the middle of the season. This means there are no byes per se, but a still content for broadcasters to play.
Just a hipshot idea, and obviously needs fine tuning but could be a realistic future in 50 years.