Hitler would have happily taken the EU in its current form as a consolation prize for his loss in WWII.
That shows how little you know about the EU — any law has to be passed by each of the countries parliaments involved. This is antithetical to Hittie’s autocracy
Hitler would probably have bulldozed the modern EU even faster than he did 1930’s Europe. And he’d have personally ordered Merkel to be married off to the first German lad brave (or desperate) enough to endure her cooking and having children by her. Maybe with the promise of a medal after the fourth kid - “Ach! You saw THAT creature mitout clothes! Shisse! You ARE a brave man!”