More Cultural military Buildings. Cause right now there is no reason to stay Dutch/Bohemian while playing in HRE. The Poles and Hungarians should get a building like the Iberian one.(Hussars) Swiss should be a cultural choice with a pikemen building. Scandinavian Cultures should get a building for more Heavy Infantry. So should Saxon English. (Houscarls)In Late game Cultures without Special Military building are outmatched.