We just need to act to implement a new model and invite people to participate. If it works for them they will.
Who is this WE? If it is to be established by the state, we will have to mobilise popular demand and support for it.
If it is to arise privately because it is in most people's best interests that it arise, then why isn't this happening on a large scale now?
If anything, it is my acquaintance's world-view which is currently informing global policy choices. not yours How do we change that situation? Index of Frank's Diaries
At best, a new model spreading bottom up will be by sovereign (private?) individuals coming together for a common purpose. I doubt whether it will be established by the State but it may be facilitated by the State.
We change things by acting; through implementing prototypes, or pointing out people who do; and getting the word out there. "Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky