Guilders, AOPA may well have made a submission but clearly AOPA are also good mates with CASA. One look at the AOPA web site will confim this. Sadly you can't both represent GA and also be mates with the regulator unless the regulator deciedes to foster and support aviation. At present CASA has no intention of fostering aviation.
Unfortunately GA need something with a little more balls than AOPA and it is for this reason I am giving up my 25 year membership. For a glossy magazine it is not worth the cost.