The peace treaty between Russia and Germany irl practically gave Germany loads of lands, but that seems to be not the case in this mod.

Here is some info on the treaty: https://en.wikipedia.org/wiki/Treaty_of_Brest-Litovsk

A map of eastern europe after the treaty: https://en.wikipedia.org/wiki/Mitteleuropa#/media/File:Mitteleuropa_ENG_wielg%C3%B3rski.PNG

Also, I think that colonial africa should be changed a bit, since Germany had aims of realizing their Mittelafrika plans: https://en.wikipedia.org/wiki/Mittelafrika