Just thought I would add in the context which you left out:Is the AFL’s infamous “go-home” factor as significant as so many fear? Today, we’ll take a look at the numbers and try to get to the bottom of that question.www.statsinsider.com.au
25% of Victorians drafted interstate get traded home
The biggest talent pool in the AFL, a quarter of the players go home. This doesn't take into effect the players who just don't make it - minimum a quarter of the players drafted.
I don't think a 20% reduction in points is enough
"Breaking it down by state, Victorians have the highest attrition rate. 25% of Victorians drafted interstate in this time have eventually been traded home – while WA, SA, NSW and Queensland are all somewhere around the 10-15% mark."
Another interesting point from the article that you cherry picked - GWS lost the most players to trades, the three next highest clubs are Hawthorn, Geelong and Sydney. So following your argument, Geelong and the Hawks are hard done by here and we deserve a points discount right?