More and better measurements, for sure. But I recall a tension between quantum mechanics and relativity theory, or results, wherein, if 'you look too close' -- the "measurer" or "observer" becomes an active agent affecting the character and attributes of phenomenon observed.
There are several widely used indexes of well-being. They are given more weight and credibility in EU social-democracies than here. But, from a scientific point of view, the weighting factors uses by each are, to varying degrees, subjective. Life expectancy is a hard number. But the degree to which, for example, health care spending improves quality of life can vary significantly from country to country, or region to region, being co-dependent on other life-style and environmental factors.
As long as, and to the extent, commodities, their production and circulation, are the means of life for billions -- there will be a powerful material force measuring all value in terms of economic wealth
Enough already with GDP growth…
-- via my feedly newsfeed