I know what you're up against.. it's a very Sydney-centric mindset, which limits the full potential of the competition.
Some selective pruning of Sydney’s over-saturated market, will open opportunities to properly represent other heartland areas (Queensland, New Zealand), AND take our game to new frontiers (Perth, Adelaide) with little-to-no talent dilution (still 16 teams, 18 tops).
To suggest we can expand to 20 or more clubs (preserving the current NRL Sydney footprint for all time as the traditionalists would argue for) is folly.
We're ALREADY off the pace compared to aussie rules, soccer, basketball, baseball and netball.. and the only major sports league that's worse than us as far as expansion is rugby union (and despite Super Rugby contracting, they have established a nationwide 3rd tier with Melbourne, Perth alongside teams from NSW, Queensland and Fiji).
Going to 20 or more teams will mean a dip in quality while the talent depth is built to sustain them all (IF we get to that sort of talent depth).. and that's time we just haven't got.