I downvoted your post, but you deserve an explanation. Generally speaking I didn't find it helpful, but here are some remarks concerning your suggestions:

1. The idea of "free and open elections across the EU" sure sounds nice in principle, but in practice we do have trust issues. For one thing, it's hard to understand each other due to the lack of a common language. It also harder because people's attention is restricted, and news from one's own country still remains more important than news for other European countries. On a side note, none of our European politicians is keen to give up his or her political influence by moving power to a European government.
2. Consider the political differences in your own country. You know your neighbor's political opinion is different to your own. You're not speaking with one voice, and one goal in mind. Germany is no different. What you may not know about Germans – at least, the older generations including me – is that we have serious problems with the idea of "leading". From the outside, that may not appear to be the case right now, but it's indeed a thing within our current political culture. To suggest we would be able to pressure others into compliance without first to discuss matters with most or all other (large) European countries is rather far-fetched.
3. Related to the previous point, our current economic "dominance" – if one could call it that – wasn't planned as far as I know. Our politicians are basically just as ignorant about the future as is anybody else. You only have to check international commentary about Germany five to ten years back. Back then, everyone was concerned that the lack of economic growth in Germany, speculating whether it would hold the rest of Europe back.
4. The German state has no right to relocate other people's companies. If you think that, you're stuck in a communistic mindset. Even if there were such a right, what would your people do if your democratically elected government would try to relocate companies and jobs to another country? What are their chances to get re-elected?
5. Yes, helping refugees is expensive and it may be cheaper to help them in their homelands if possible. I guess, some here in Germany would even agree with your suggestion. But as a matter of fact, nobody was able to forecast we'll get that many refugees. In hindsight, it's always easy to say what should have been done.

Overall, I appreciate you've taken the time to write it all down, but it would have been more productive if you would have let it rest for a day or two, and checked it again before posting. I'm sure you would have found that many of your arguments needed some more research.