There was/is a recent thread where someone asked WI Czechoslovakia remained democratic - essentially Finlandized. I think you would need Poland and Czechoslovakia, if not the rest of Eastern Europe, to operate under this model. Butterfly the Berlin Airlift and you the nature of the rivalry between East and West is a lot less intense thereby negating NATO. Also, IIRC, at NATO's formation, there was a lot of debate about including West Germany and its inevitable rearming. Coming so soon after two world wars, this was not as obvious as it appears in hindsight.
So, I dont think it's a stupid thought but the perceived threat that each side viewed each other needs to be dialed back quite a bit.