I was thinking last night re: Sydney stadiums that for MNF, suburban grounds are going to be relevant in the future if MNF continues beyond 2017. Friday should have a SFS blockbuster as should ANZ on Saturday & Sundays regardless who is playing.
I don't know Sydney as well as the ones who are living there, however Brookie & Penrith are always going to be relevant stadiums to their NRL teams, Parramatta Stadium would be a good 30-35k stadium however I'm not sure if that upgrade would affect a 45-55k stadium somewhere else in the west.
As the Sharks own their stadium, I'm not even sure the NRL could force them out of where they're playing.
WIN is the other one that needs better utilisation, 4 games a year is pretty shit and it's affecting Illawarra to pay their share of the bills.