"If we are to make the moonshot pact work, it must be an initiative that is actually led by the leaders of all partner parties.
"We have learned from hard experience that agents or entourages sometimes push agendas that are at odds with the vision of the leader, so this formation must be strictly a leaders-only initiative.
"A secretariat will be provided, but all of the negotiations and discussions must be handled by party leaders themselves.
"There can be no job more important for any opposition leader in South Africa at this time than the mission of the moonshot pact,” Steenhuisen said.
But not everyone is impressed with his plan.
FF Plus MP Corne Mulder said he was already bringing together a broad church of civil society, including political parties, to a new "UDF".
Mulder is the chairperson of the multi-party coalition technical committee. This coalition was brought together to lead the Gauteng metros of Johannesburg, Tshwane, and Ekurhuleni.