Tom Halsey
International Coach
Personally I don't see the argument against relegation, unless you don't have enough teams to make it worthwhile, which tbf may be the case in Australia, I don't know.TBF it's probably partly the sport that you aren't receptive to.
The best argument for relegation is that it gives hope (however nominal) to supporters of teams outside the top flight that one day their club will be in with the big boys. I know nothing about AFL at all, but if you were a follower of (say) South Melbourne back in the day you're now either faced with a mother of a round trip to see "your" team or to start to follow one of the other local clubs, which is usually anethema to any fan. When Wimbledon relocated to Milton Keynes & were "rebranded" as the MK Dons over here a group of local supporters formed their own team called AFC Wimbledon who do have that chance (however minimal it is) that they could be back in the big time one day.
Basically means you can build up as good a team as you like, you still won't be allowed in the big competitions. What's the point of that?