@CellKu: there is no way of doing that.... I can't remove their ability to form alliances with the Humans without making it also impossible for human players to form alliances.... And the US and Allies should be able to work together....
I think what we should fix as a rule is that no one will bring in the neutral nations into the war (Switzerland, Portugal, Ireland, Spain, ....) since the AI's don't have the ability to form alliances, this should be enough...
Playing the Axis will be the hardest role, since almost everyone will be against them, you can do it Nachos, but I would recommend an experienced player of the scenario...
anyway, let's wait a couple more days, if no one shows up I'll start the game....