And Napoleon ended the Wars of the Revolution with Luneville and Amiens.

It was the allies who broke those treaties.

As for putting relatives on thrones, the Hapsburgs and Bourbons had set the example for that process in Italy and Spain. And Napoleon had to find ways to keep both Joseph and Jerome 'occupied' to keep them out of trouble. George III also had family 'troubles' with his offspring...

Are you saying that it was fine if the allies sought revenge against France after Napoleon became head of state but it was not fine for Napoleon and France to defend themselves?