The NRL should make it to 20 teams, but I'm opposed to conferences. With the increased intensity of the game the season will probably reduce in the amount of games in future. The NRL already plays an extra 2 games compared to AFL.
Conferences are beneficial for schedule purposes, they dont need to split the ladder tho, only to point out to all stakeholders that team A will play team B twice every year, and only play team C once a year due to them being in another conference...
The rest of the competition will exist as is no changes, just that certain teams will always verse each other morso dependant on how they set up the conference...
My thoughts and hopes on a conference would be that, since sydney is the centre of NRL's existance and homebush's "Accor stadium" is generally the GF that a horizontal line divides thru sydney from homebush and any team above that line is the northern conference, any below it is the southern conference...
Making it a geographical border, puts away any bias on a full sydney conference vs the rest, or any other "derby" must haves that people have thoughts about "which are irrelevant due to in a decades time titans vs redcliffe will be a "derby" ...for example..
So if you have certain teams playing each other more often every season, there will be more animosity between those two teams = derby
Northern Conference
cows, bronx, phins, tits, nites, eagles, eels, riff, add perth(bears?)
Southern Conference
soufs, rorter, tigpie, shark, dog, stmerge, raider, strom, worrya
Then you can add another team to each conference to get to 20 teams,