My feeling at this point goes something like "no system is any match for self-centric morons", which unfortunately seems to describe the vast majority of the species - including the writer of these words, of course.
Somewhat likewise, a system is hardly - if at all - needed for selfless beings possessing proverbial "half a brain".
The necessary, effective change is within, and already prescribed by any number of religions/philosophies shown to effect such change in beings that give it "half a chance".
Which, of course, just so happens to be thwarted - if not sadly circumvented - by personal/individual moronic self-centrism....
Quite the pickle, no? :-)
A safety here is that the self-centric morons can cluster together but in small manageable groups where they can enact no harm on anyone other than themselves.
I'm of the low opinion that most people can't engage in the half of the brain needed for their own self-benefit, because they're simply overwhelmed with the rat race of life. Asking people to change themselves, is asking people to first have time for themselves, and I don't think many have that choice.
As much as I'd love a revolution of the mind to happen organically from below, I'm of the opinion that state socialism + some federalization is probably more likely