Your letter is well meaning but pointless. Sweet reason has been tried as a strategy for many years but has completely failed.
The only thing in my opinion that can save GA is a concerted political negative Campaign against Government members in margiNal seats.
There is no other way to get their attention.
The Government has 29 marginal seats. Take up a collection and merely threaten to run negative advertisements against the sitting member in each of these electorates at the next election and I Guarantee CASA will be eviscerated over night.
https://en.m.wikipedia.org/wiki/Post...election,_2013