8. Russian fascism on the other hand, would be ridiculous. -> The Russians knew what opinions the Germans had on them, they made it no secret. A distinct Russian fascism, although more unlikely than a restoration of democratic or tsarist Russia, would be possible even if stretched a little. But a Russian fascism working with German fascism would be laughable, and the game's mechanic don't make a distinction between different types of fascism, if you are fascist, other fascist nations like you, so even that distinct Russian fascism, although unhistorical to the point of ridiculous, would be hard to implement.
Russian fascism is anything but ridiculous. In fact, that is realistically the second most probable thing that should happen if communism fails.
First, Russians were imperialists only 18 years ago. There was a huge swath of people even in communist party that eagerly subscribed under "one folk, one reich, purge minorities or sent them packing to Siberia", rusification as a basis for homogenisation, destruction of nonRussian national/regional identities, ex. Jews, were not always welcome, even under communist regime, and in former times countless ghettos existed and pogroms and slaughter were present.
Yes, Russian fascism will not have "clearing living space" goal of German version, but Russian more or less hundred years dream was to conquer "economic space", mostly related to Mediterranean straits, Bosporus, Gibraltar, Suez, Denmark strait and capture of various bread-basked areas and oil (because before Siberian oil discovery, Soviet deposits of oil were very minor).