The overwhelming majority of the population is not grey tribe. Yes, abstracting fundamental social functions onto universal, non-ideological bases is a Good Idea in theory, but the reality is the majority of people don't learn Esperanto or participate in the Cult of the Supreme Being. There are very real switching costs that often exceed the supposed advantages sought out and the end result often pales in comparison to the original, both in substance and meaning, and fails accordingly.

If you think another attempt would be successful, that you, or another cadre of well-intentioned reformers, can successfully inoculate a society with an abstracted ethical code that mandates returning evil with good, embracing the martyring of oneself for truth, total pacifism, etc. on a purely logical basis, by all means go ahead and give it your best shot. Until then, I'm going to loudly proclaim that Chesterton's fence should be returned to its field.