I would like to see a real Libertarian plan for a civilization that would actually work. If there is one, why haven't they created it yet?
You are taking part in it. The plan is to just replace governments and their creations piece by piece with superior decentralized alternatives. If these alternatives don't get created or adopted, perhaps there is still a need for government intervention in that realm. The idea that everything should be planned out beforehand is for other people to do.