Rugby Australia chief executive Raelene Castle echoed his comments and added that the new competition would have "significant commercial benefit" for the game.
World Rugby's business plans follow reports in the British media that the Six Nations is considering an offer from private equity firm CVC to buy a stake in the championship, which could prove to be a hurdle for the new league.
However, World Rugby have since updated the blueprint for the competition, adding a promotion-relegation mechanism to provide tier two and three nations a pathway to compete with tier one countries, while reducing its initial number of fixtures by removing the semi-final round of the competition in a bid to address player welfare concerns.
In a statement, Beaumont said: "I would like to thank my union, competition and player representative colleagues for their candid, constructive and positive contributions".
'This is a pivotal time for the game.
"There was strong recognition that World Rugby's Nations Championship proposal, based on a true pathway for all, has been developed with great care, extensive evaluation and with the global game at the forefront of our thinking", World Rugby chairman Bill Beaumont said in a statement.More news: Students Blame Chelsea Clinton for Christchurch Massacre, Force Her to Apologise
"The proposed format would be underpinned by a record commercial partnership with leading global sports marketing company Infront, guaranteeing nearly £5billion for investment in the sport over an initial 12-year period (of which more than £1.5billion is guaranteed incremental revenue for the world game)".
World Rugby says it would continue to work with players and leading domestic club competitions to optimize the model, while also committing to invest in a women's Nations Championship.
"We have an opportunity to change the landscape of the game for the long-term betterment of all unions. Only by keeping the best interests of the global game at heart will we be able to achieve something truly impactful for the future success and sustainability of the game".
"It would also create new and potentially lucrative opportunities for the sport as well as a single point of purchase for existing and new broadcasting players".
France and South Africa have both given their initial support to the plans, while emphasising there are details to be worked on.
"But there are a number of due diligences to be performed and questions to be answered before anything can come to fruition".More news: Italy outraged as court finds victim too ugly to be raped
Fiji, and Japan, the 12th ranked nation, will potentially join the Six Nations teams and Rugby Championship teams in a tournament to be played every non-World Cup year.
"We know how passionate rugby fans are and we want to ensure accessibility for fans globally, supporting World Rugby's vision to continue making the game a sport for all".
Infront has confirmed its status as the "preferred commercial partner" for World Rugby's proposed new Nations Championship.
It is understood that the Irish and Scottish unions in particular remain fiercely opposed to the new model which would involve Six Nations promotion and relegation.
The decision comes after Wales and Australia's Test captains, Alun Wyn Jones and Michael Hooper, requested that players are given a place at the World Rugby table so that key decisions don't bypass the athletes.
Rugby Championship and Super Rugby governing body SANZAAR said on Friday that while there were still issues to tackle around player welfare and scheduling, the concept was "exciting" and could serve as a good pathway for emerging nations.More news: Cyclone Idai batters Mozambique