Cricket Australia has lodged a five-year pay offer to players, with female cricketers set to be the big winners.
CA tabled the offer publicly on Tuesday, spruiking the proposal as a landmark deal for men and women at international level down to boys and girls at the grassroots of the game.
But while applauding elements of the proposal, ACA chief executive Alistair Nicholson said many questions remained unanswered.
"Like all such proposals, the devil is always in the detail," Nicholson said.
"For the moment, what can be said is that this proposal shows a number of promising signs that indicate that CA has been taking the ACA's lead on various key points from our submission.
"However, with a lack of detail in the terms and conditions that underpin this proposal, the ACA will continue to seek clarification from CA and advise the players on this accordingly."
CA and the ACA have argued on several fronts during at-times tense pay talks, which will become more frantic in the months ahead as the existing deal expires on June 30.
CA's desire to move away from a fixed-revenue model that has been in place for 20 years continues to be a major sticking point.
The players' union called the system "the bedrock of the successful growth of Australian cricket" in its submission to players, which featured a preamble by national skippers Steve Smith and Meg Lanning.
"(Our proposal) is a variation from a model that has stood the test of time over 20 years but, in our view, it is a model that has served its purpose," CA chief executive James Sutherland told reporters.
"It's a model that is now outdated.
"The model that we have proposed is one that not only secures increasing guarantees around player payments but, at the same time, international players - men and women - will share in surpluses.
"It's a slight variation on the previous model but it's an improvement."
CA's offer for a new five-year Memorandum of Understanding (MOU), trumpets an immediate average pay increase of 125 per cent for female players.
Sutherland described the proposal as a "seismic shift" in the way female cricketers were paid.
The average salary for a Southern Stars player is set to jump from $79,000 to $179,000, with the average for domestic female players to rocket from $22,000 to $52,000.
CA claimed the average income for international male players, inclusive of match fees and performance bonuses, would be $1.45 million by 2021/22 under the deal, an increase of 25 per cent on 2016/17 ($1.16m).
While they're eye-catching numbers, Nicholson said the ACA would continue to seek further detail and respond more fully in coming weeks.
Despite CA's unwillingness to give any ground on its desire to move away from the fixed-revenue model, Sutherland remains confident a new deal will be struck.
"I'm optimistic that there is really strong will on both sides to see this through and achieve those deadlines," he said.
"Obviously, June 30 is looming and there's a fair degree of urgency around it but I think, from our perspective, our member state associations and the broader cricket community would be very keen to see us progress.
"Similarly, I'm sure on the ACA's side, their players and members would be desperately keen to see the ACA work through this situation to find a resolution."
Sutherland believes the proposal will allow CA to increase investment at the grassroots level of the sport, while taking a huge step towards gender equality in pay.