More importantly to the US, such a Germany would be less likely to do our bidding.
I think the real danger is the 19th century nightmare, an Asian landmass extending from the western border of Germany to the Pacific that is possessed of a nearly unending inventory of minerals, petroleum, people, scientific knowledge and riches. Germany and Russia are currently on the ropes with China not far behind but one can see within a generation a world power of the first rank with aggressive appetites.
The history of Europe post Napoleon is really the history of Germany. It has been the preoccupation of the British to prevent the amalgamation of Germany with Russia. If one adds modern, powerful China to that combination, the threat could be very daunting indeed.
