What If All The Germanic Countries United?

Imagine a world where Germany, Austria, Switzerland, the Netherlands, Belgium, Denmark, Sweden, Norway, and Iceland join forces to create a new powerhouse in Europe. This alliance of culturally and historically connected nations could reshape geopolitics as we know it.
With a combined population of over 200 million people and a strong economy driven by innovation and technology, a united Germanic nation could rival global superpowers like the United States and China. The consolidation of resources, expertise, and influence from these countries could lead to unprecedented advancements in various fields such as science, technology, engineering, and culture.
From a political standpoint, the formation of a united Germanic federation would bring about significant changes in international relations. How would this new entity navigate its relationships with neighboring countries and global organizations? What impact would it have on existing alliances and power dynamics in Europe?
Furthermore, the cultural diversity within the Germanic nations would enrich the collective identity of this new entity. From the rich history of Germany to the progressive values of Scandinavia, each country brings its unique strengths to the table. How would this diversity be celebrated and integrated into a cohesive national identity?