For 1 thing, Italy never joined the war effort. Since Lille was never taken. Of course this would almost certainly never happen in a real game, but it did look funny when greece was declared war upon by Italy, joining the allies, but being unable to actually fight Italy. It looked even more strange when a CA was built in 1941 on neutral italy. (don't worry the game didn´t crash). I suggest a trigger that makes Italy enter the War when It declares on Greece.
Also, since BeNeLux countries where never invaded (far fetched i know), when Japan attacked the West, Dutch East Indies joined the West, but Holland did not. I suggest making it so that the low countries join the allies then, and no later.
Other than that, no strangeness... I am happy to report