What about the Optics & Design?

You either have a treaty that is not punishing at all to avoid vengeance or a treaty that is so punishing to ensure the losers will never be able to go to war again. The problem with Versailles was that Germany was a rising nation with a strong industry and relatively large population. Treaty of Versailles did not significantly affect either. So they can still go to war and kill you except this time they will be extra motivated.