You can create the First Reich of the HRE like the true proud German you are. Be careful of dirty frogs and savage mudlsimes. DLC recommended

Best Grand Strategy. Very German frienldy, the whole game is to play as Prussia and form the German Empire and get remove dirty frogs and austrians.

Very German friendly game. I would suggest forming Prussia with Teutonic order then unifying the German States into one Hegemonic Empire. DLC a must.