If you judge countries externally by their Gini coefficient, countries which blow up the richest people's resources (or just stifle innovation (The USSR, 60s China)) will have a "better" number. So it's a really bad number to use, since there are evil ways to maximize it.

I'm suggesting we should use numbers like the absolute # of people in poverty, or national health, or access to education - those numbers aren't gameable and allow better solutions to rise to the top naturally (and we don't care how they go up, as long as they go up)