I remain unconvinced that a Kingdom of God, Hold the God, as the AC puts it in the other reply, can succeed.
Good, because I firmly believe that's what we're supposed to learn. We got ourselves kicked out of the Garden because we thought we knew better than God, so God said fine, try it your way for a while. So He left us temporarily wandering through the desert (i.e. what post-Fall human existence is), to give us time to think about what we've done, and to come to the realization that, ultimately, we need God and can't manage on our own successfully.
So I would say don't despair too much about the temporal, as really it's supposed to be this way, because it's our doing. And would you expect it to be any other way, knowing mankind (and its spiritual temptor)?
So we should do what we can here (e.g. the American experiment was an awesome try, as a lesser evil form of human organization), but ultimately we have to wait until He leads us out of the desert and brings us home. Then we shall have our perfect society, because it will be ruled by an omniscient, omnipotent, benevolent dictator. And like the founding of the U.S., the idea of using technology to take man out of the equation in certain things is an entirely worthy pursuit, because it can help, but it will never take us all the way there.
p.s. I liked your "Common parlance leads to common thinking, and is not fit for uncommon human beings."