Any form of anarchism will simply fall prey to human nature. It's the opposite end of the same naivete that says "yeah, past Communist/Military dictatorships have been bad, but our guys are good, they'll get it right," except you're more likely to get a workable system out of tyranny than you are out of anarchy
What we need is some sort of computer dictatorship. Develop a utopian legal system (one which would work assuming benevolent dicision makers at all levels, but fails due to human nature), install it in a mainframe, then give it all the deciding power.
Vote Skynet: 2012
Monster Hunter: pissing me off since 2010.