I tend to think the worst possible outcome for Germany almost requires no cold war. It was the cold war that cut short the western partition of Germany to form the Federal Republic and the DDR also profited (such that it was) by its importance as a counterweight to a independent West Germany.
If the WW2 allies remained on the same page regarding what to do with Germany and the rest of central Europe, I think something like the Morgenthau plan would be much more attractive to the west. I could see
"Germany" being partitioned into several small states, it's industry removed, and larger chunks absorbed by adjacent states (France mainly - Poland already got a lot OTL).
Here's a question, though, if the remaining "German" states stayed independent and basically became a group of democratic neutral and inconsequential "Austrias" or "Switzerlands" between Denmark and Italy, would this necessarily be a bad thing for "Germans" living in them 50 years later?