

Really more of a communal theocracy. It says right in the New Testament that you are expected to give all of your wealth to the church, with the implicit trust that the church is meant to distribute those resources fairly, starting with those most in need.
As far as catch-all rule of life rules go, do you have any greater alternatives?
But again, your problems aren’t really problems with the idea itself. You’re just trying to make a general life guideline do more heavy lifting than it was meant to, and all your issues are again solved with a little bit of common sense and conscientiousness.
As a quick sidenote, “do unto others as you would have them do unto you,” is not Yeshua’s (Jesus’s) principle law. His highest commandment was, “Love the Lord your God with all your heart and with all your soul and with all your mind. This is the first and greatest commandment. And the second is like it: ‘Love your neighbor as yourself.'”