The country page is getting rather cluttered and long now. Maybe a resorting of it? eg. Current States, Extinct States, Dependencies, Micronations. And maybe the various incarnations of the state can be grouped under one heading eg. Germany - Third Reich; BRD; DDR; Empire etc.
Existing, Extinct and Micronations I think would be a good way to group them. If you grouped them such as in your example "Germany - Third Reich; BRD; DDR; Empire etc." sometimes you'd need to put the same extinct nation under several different countries (which I suppose isn't too bad an idea), but if you left it as Existing, Extinct and Micronations you'd only have to list each country once.