When creating a nation, there currently exists an option to randomise freedoms, which can be used to obtain the desired level of base freedom for economic, social, and political freedoms. The problem with this option, is that it is cumbersome and time-consuming to find the desired levels of freedoms by randomising. For example, I tried creating a nation with maximum economic freedom, no social freedom, and no political freedom; it took several minutes of randomising to find a close approximation, which was still not perfect.
My suggestion is to replace the grid of freedoms in the nation-creation page, with a slider for each freedom, and a list of presets, such as for "conservative" or "socialist".