20s and 30s German society was much different than anything I'd aim towards. That was a society largely without rules. The reason to have a sit down is to make the rules, the trick is to make rules that both sides can live with. The problem is that in any conflict you have a bunch of hot heads who don't want to make something that the other side can live with, they want the other side to go away. Get rid of the hot heads and you're left with reasonable people that have a normal capacity for compromise and are willing to put up with each other. But as long as the hot heads reign there can't be a sit down.
20s and 30s German society was much different than anything I'd aim towards. That was a society largely without rules. That's funny.
So, in your scenario, when the 'moderates' have killed all the 'hotheads', and the only ones left are those like yourself with no basis in God-given law, on what are you going to base your new set of rules for mankind to live by?
Are you going to make it up on the spot? There were several societies who tried that unsuccessfully in the last century...in fact, they did it EXACTLY as you are proposing...the most notorious was known as the Soviet Union.