And of course we know what a German victory in the east entailed. Ethnic cleansing of Poles, confiscation of foodstuffs, weird plans to colonize the Crimea...
Requisitioning of food isn't unlikely given how tight belts were in Germany herself.
As to colonising the Crimea, European powers were colonising all over the place in that era. No particular reason why the Crimea should be exempt. Admittedly, some of its population was white, but not all.
Ethnic cleansing of Polish border areas was certainly both crazy and inhumane - if carried out. However, it's by no means clear that it ever would have been, given that few Germans showed much eagerness for living the life of farmers in eastern Prussia. Population movement was all the other way. There was talk of settling ethnic Germans from the Russian interior, but these too, if they chose to leave home at all, would probably soon have found that they could live better in Essen as labourers for Krupps. The Second Reich was not the Third. It couldn't just resettle its people by decree.