I define it by the skill level of the players.The question here is how do you define “quality” of a match?
Closeness of the game? Entertainment for the crowd? Physical power of the athletes?
Which one are we losing?
It's a very simple concept. If you have 26 high level players and you form 2 teams out of them, you will see a high quality game. Then, it's decided to create 20 teams. Now those 26 players have to be spread out over all those teams, and the numbers made up by mediocre players, resulting in lower quality games.
The question is, are there enough high level players to accommodate expansion, and I'd say no. The games only really played in nsw, Qld and NZ. Melbourne has had a team for decades, and to my knowledge, there's never been a Victorian player in the team.
The participation rate is never going to go up when people like Phil Gould and Andrew John's are complaining about rules being enforced. People just switch off their tvs or change channel.