Interesting, Chris, thanks for writing it up.
In conversation with me Wilks casually referred to "1,100 members," but of course "members" include coaches, supporters, etc, so we know PA doesn't have 1,100 lifters. However, it is possible for us to discover the number of
active members, simply by collating all the competition results from (say) 2014 in a spreadsheet and eliminating names in common. These numbers would make your article stronger.
Secondly, I'm not sure it's fair to say the sport is "divided" between PA and the others. It's more that PA's membership has grown slightly over the past decade or so, while the other federations have grown membership out of nothing. It's like there's a pizza shop here doing sort of okay, then a burger place opens next door and people travel from across town to go there - while the pizza place does as well as it ever did. The pizza guy probably resents the burger guy, but the pizza guy in fact is not doing any worse than before, and is in fact doing a bit better.
Division implies - as all the federation heads would no doubt like to believe - that if the other federations disappeared, everyone would join theirs. This is not true, anymore than if the burger joint burned down everyone would go to the pizza joint. So in fact the different powerlifting organisations represent less
division and more
addition.
Since you were talking about drug testing, it would have been relevant to say that in contrast to PA having more testing than most IPF-affiliated organisations, GPC in fact officially is against drug use, but the none of the national bodies (so far as I know) actually implement this. Many times you mentioned that other federations funded testing out of membership fees, with their fees being lower than PA's - you might note their fees are on par with GPC's.
The situation with CAPO and its possible implosion amid financial opaqueness is still developing, so would be difficult to write about, though obviously relevant to a general discussion.
These points would make the article less of a hatchet-job on Wilks and PA, and more illustrating the general issues present in the sport in Australia.