Cricket Australia Chief Executive James Sutherland believes the time is right for major revamps to Test and ODI cricket, throwing his support behind proposed changes discussed at the International Cricket Council’s annual conference in Scotland.

The ICC did not reach a decision on any of the proposed changes, which include a two-tier system for Test cricket and a new ODI championship, at the meeting in Edinburgh.

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However, a workshop at the governing body's headquarters in Dubai in September will thrash out the details and Sutherland said discussions in Scotland were positive.

"We will continue to work with ICC and other member countries on the review into the structure of bilateral cricket to ensure that each of the three international formats continues to be strongly supported by fans," Sutherland said.

"We are keen to see that cricket enjoys growth in both interest and popularity, not just in traditional markets, but also in developing cricket nations.

Arguably the biggest talking points at the six-day conference were the changes to Test and ODI cricket, which would see a two-division Test league system comprising seven teams in the top tier and five in the bottom, and a new ODI league of 13 countries aimed at giving greater context to the 50-over game outside of World Cups.

While Bangladesh and Sri Lanka have publically opposed the two-tier Test proposal, Sutherland said it was impossible to hide from the "realities of modern day cricket".

"We are very supportive of a Test Championship and League structure that will drive significant additional interest in Test cricket series," Sutherland said.

"Test Cricket is the oldest most traditional form of international cricket. It is highly valued and deserves to be treated with the utmost respect. But we cannot hide from the realities of modern day cricket, which sees three formats of international cricket and thriving domestic T20 leagues.

"One-day cricket continues to be important and the recent World Cup in Australia and New Zealand highlighted to us again just how powerful context is in driving fan support and interest.

"In between World Cups though there is an opportunity for cricket to create a genuine league that includes a World Cup qualification process, ensuring that every ODI match counts toward something meaningful."

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Additional World T20s, scheduled for 2018 and 2022, also remain on the table and will be discussed later this year and Sutherland said the extra tournaments presented the game with a rich opportunity.

"On the T20 format, the BBL and WBBL has proven that we can attract new fans to the game, particularly women and children.

"Rather than driving scarcity of T20 cricket that is required to protect Test Cricket, the scheduling of T20 cricket should ensure there is ample T20 content for cricket to fulfil its vision.

"The bigger the fan base for T20 cricket, the bigger the opportunity to convert T20 fans into fans of other formats of the game."

The ICC is also to consider a new constitution that would usher in sweeping changes, which would wind back many of the changes made in 2014, at its October meetings.

Sutherland said he believed it was an ideal time for the sweeping changes to be implemented.

"Now is the time for cricket to work collectively on a detailed plan to ensure the sport retains popularity with future generations in a rapidly changing and competitive world," Sutherland said.

"We need to continue to be a sport of choice for all men and women, boys and girls of all backgrounds, all over the world."