Outsiders view - FWIW my motive isnt to pick on any one club, but try to see how each club can improve their future picture.
3 clubs that are "stuck" in suburban stadiums, mostly due to distance, partially due to stubbornness - Sharks, Manly, Penrith. Hard to see any of these clubs moving full-time to the 'big 3' central stadiums, it's too far, it wouldn't work long term.
BUT. They need to get themselves a guaranteed big gate or two above what their 20k local can hold. Look at Easter Monday, Anzac Day, Good Friday etc games. Big stadiums, almost certain gate above 30k. That's 10-15k non-members buying tickets at $30, a pretty decent windfall for the club, plus the stadium owner might chip in to get them there.
Sharks should look at the June long weekend and/or the Easter Friday or Monday at the new SFS.
Roosters have had good success taking games to Adelaide, decent crowds v Storm and Adelaide tourism pays us to go. There could be growth here with another club getting on board.
Still 10 games at Shark Park and an extra half a mil a year or so directly into the coffers + added sponsorship opportunities..
Imo clubs like Parra, Bulldogs, Tigers, Souths will be pulling 25k+ crowd averages in the next 10 years. Even Roosters should have a healthy boost. The proud suburban clubs need to make positive moves now to ensure they aren't left behind.