How much more stable will postwar Europe be with a Treaty of Versailles that doesn't end up screwing Germany's economy and being one of the causes of WWII? To accomplish this, I'm thinking of killing off Woodrow Wilson before his presidency and Clemenceau, along with Hitler early in his childhood. If this is enough for a better Treaty of Versailles, what will the new terms be? If not, what else can I do to accomplish this?