New Caledonia's Labour Party wants the territory to become an anti-nuclear country without an army.
This is being proposed in a draft constitution being drawn up as further referenda on independence from France are set to be held over the next four years.
The partial draft was presented by the party's leader, Louis Kotra Uregei, who told a news conference it was based on the document presented to the United Nations in 1987 after the territory was put back on the UN's decolonisation list.
He said the constitution would centre on the Kanaks' identity, with the nation's president to be chosen by the chiefs' council and with local councils reserving a third of seats for Kanaks as a bonus.
The president would appoint a prime minister from among the elected members of the national assembly.
Mr Kotra Uregei said work on the document was continuing as key points, such as land issues, were yet to be discussed.
His proposal came only weeks after a majority of New Caledonian voters rejected independence.
France's military command for the Pacific is in New Caledonia which President Emmanuel Macron regarded a key segment in his Indo-Pacific axis to contain China.
New Caledonia's neighbours, such as Solomon Islands and Vanuatu, have no army just like most other Pacific Island countries.