I am thinking about creating "Vandalia", a fantasy state that would have been created by the Vandals if they were not destroyed by the Eastern Romans. My only problem is what culture they would be; I am thinking Maltese, on the grounds that the Vandals would have most likely have assimilated in with the Romance speaking locals, but would have been heavily influenced in language by their Muslim neighbors (Yes, I know that Maltese is related to Arabic not Latin, but for my purposes it would be close enough). Either that, or I would go all out fantasy and just make them have a Germanic culture. Pity we can't make our own religions, or else I would make them Arian in Religion, now they will either be Coptic or Catholic.
I am also thinking about making a Pomerania that is still Slavic (Polish or other West Slavic culture), I am annoyed that the Crusader kings 2 converter will make them Germanic, even if you remained Slavic Pagan, i.e. no Germanic immigrants.