Coming up with novel indicators is not enough. "GDP" isn't simply about measuring economic growth, it's about labeling the desirable feature for the economic elites. The obsession with growth predates GDP, it even predates Capitalism as it's based on the much older "tradition" of imperialistic expansionism.
One of the reasons "degrowth" is useful is because it's antithetical to capitalism and capitalism's growth imperative, so it can't be co-opted by capitalism. When you promote "regenerative", you promote a term that has already been co-opted, most infamously now with the "regenerative grazing" pseudoscience.
heel our planet
heal*