Slavs is a general term for many ethnic groups, and the slavs do outnumber the Germans, but most slavs at this point due to rape and other reasons have some germanic blood and the army is mostly German. The slavs are divided up into Poles, Czechs, Slovaks, Serbs, Croats, Slovenes, and Bosniaks. That is a lot of different peoples.

And the Emperor, or since were German, Kaiser, would still rule. It would be a constitutional monarchy with a national congress. That congress would have 201 seats, with the election districts be divided up by population. The Lance Empire would still dominate as they have a majority of the seats on the national congress. Plus the UGF would be a bit like the UK. A country of countries. There would a Regler that would report to the Emperor, National Congress, and Prime Minister. Each constituent would also have its own congress, so a way to calm down rebellions in the east would to be divide up into its own constituents.

The corporation ruling Numburg would gain many more benefits. While they wouldn't be able to operate in the Lance Empire at first they get special privileges and be able to operate at a wider area. As well as take up a few Government trading companies, and get some special privileges in the colonies.