Conservative Liberal senator James Paterson on Monday released draft legislation, which he argues will preserve the freedoms of all Australians.
Ms McLeod said the Marriage Amendment (Definition and Religious Freedoms) Bill 2017, endorsed by five government members including Senator Dean Smith, already extended existing protections for freedom of religious expression in the context of marriage and was a reasonable compromise.
"But I suspect it will need improvement in terms of strengthening religious protections", he told ABC radio.
LGBT activists also said this bill runs counter to the will of the Australian people casting a vote for equality, not a "license to discriminate".
Paterson's bill, which has been roundly criticised by marriage equality supporters, would allow churches and celebrants to refuse to solemnise a same sex wedding, establish a limited right of conscientious objection so no-one is forced to participate in a same-sex wedding against their sincerely held beliefs, and would allow parents to take their children out of classes that conflict with their values.
Tasmanian marriage equality advocate Rodney Croome claimed the bill "would effectively allow businesses to hang a "no gays" sign in the window ".
The debate on the Smith bill is expected to start on Thursday and carry through to the next parliamentary sitting week, beginning in late November.
President, Fiona McLeod SC, said while the Paterson Bill acknowledges concerns of those holding traditional views of marriage, 'it goes well beyond the issue of marriage in a number of crucial respects'.
If the official count of the same-sex marriage survey matches myriad opinion polls, same-sex Australian couples will be able to marry by Christmas.
Nevertheless, discussions are well under underway as to how same-sex marriage might be legislated.
"For those who want to see the marriage certificate, they're the ones waiting". "I don't think their votes should mean we shouldn't have same-sex marriage, but I do think that their freedoms should be protected and I think my bill is a bill that best does that", he said.
"It would be self-defeating to repeal discrimination and replace it with discrimination", he said.
"That's the goal", Prime Minister Malcolm Turnbull vowed ahead of the Australian Bureau of Statistics announcing on Tuesday which way more than 12 million people voted on the issue. Many other MPs have said it's 'complicated' and will wait for the final result before they announce their move.
"There is no apology for the fact that the Bill does not address free speech or parental rights - because it's a Bill about marriage equality".