Quote Originally Posted by Husar View Post
You shouldn't entirely dissolve the national governments, you just change their function.
The 16 German states have their own governments as well, which serve certain functions. Even more centralized countries like France have départements or other forms of more regional administration. You can't just do everything centralized.
The federalization would probably happen in several steps, where the EU would take on more functions over time. And the EU government would have to change in some ways itself, with a president/prime minister/chancellor as the head of state and so on.
One of the biggest problems I see are language barriers, like what if a third of the people can't understand the speeches of their own president anymore. Translation is not as good as hearing it in your mother tongue. As younger generations all learn English, this problem could be solved over time though (funny enough, without England itself being part of it...).
But what need for the German Federal Government after EU Federalisation? Surely the various states also have sub-divisions?

France has sub-divisions but not as many as as Germany, and they are not really of the same nature.