Optimize Distribution of Wealth
Distribution of wealth determines the choices we make -- give the same amount of resources to different subsets of society, and you'll see different kind of initiatives evolve. With respect to our collective goals, it not only matters what is the Gini coefficient, but also the very specific points of the distribution support.
It may be obvious, that some goals are rather important, such as 17 SDGs (and we'll get a better picture over time), so, there must exist optimal subsets of society to have greater wealth than the others, depending on their importance in addressing the goals each and every time.
Ideas are welcome, on how to optimize the distribution of wealth.