Personal Carbon Allowances is a framework for reducing CO2 emissions based on fairness and practicality, and I can see that Total Carbon Rationing would build on that on a larger scale. Since the world needs radical, equitable and effective solutions, it would be fantastic to see something based on these principles tried out and put into practice.
Total Carbon Rationing should replace attempts to set a carbon price. We roughly know the quantity for various global warming scenarios. Setting the quantity per capita & issuing that could be a lot more effective than trying to guess the “right” price for carbon.