I do think the addition of the vertical scale is necessary as the 'left-right' scale if far too simplistic and inaccurate.
But I think 'libertarian' should be 'anarchy'. That way you're comparing a central government with limited freedom with no government at all.
Libertarianism is also a loaded term because it's been around for a longer time and it can be left-wing.
I also don't like the inclusion of Communism and Capitalism. It should just be 'left' and 'right' politics. Communism is by definition a stateless society so it's also positioned incorrectly.
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