Bogarus is an anachronism, but so are many other nations. It is composed of national romantic folklore, kievian armies, combined with a touch of later tsar age russia and orthodox (and sectarian) christianity.
It could probably be split, but since there are just three eras in dom3 (this has started to become a gripe for me
) i felt that all these parts had to go into LA Bogarus. I would not mind playing a mod in the lines mentioned above.
The folklore part will be more nature oriented in an earlier era, when the land was held by conquering vanir.