I downloaded the scenario and started it, did not like it for many reasons (didn´t even finish the first turn), many who have been said in previous comments.
I was working on a similar scenario but decided not to pursue it further when I realized it was impossible to create a any kind of diplomatic agreements.
I´m not sure about where Germany got it´s oil from but I´m pretty sure it wasn´t Libya, in a book about Churchill I read there were some mentionings of Germany favored Persians and I intended to solve the rubber problem with S-America but alas no way of creating trade agreements either.
One thing I didn´t like is there were too few nations, we have the possibility of 16 nations and I think we should take advantage of that. About the Maginot line; it did not stretch all the way to the Channel, there was a reason for Germany attacking through Holland, Belgium and Luxemburg.
Germany had the finest artillery pieces in the world. I don´t see them anywhere in the scenario.
When I was making contact with the explorers and exchanging maps I noticed that Panama isn´t there and US´s banana states in central-America are missing AND the world is scarsely populated.
Many things I didn´t like are not your fault and hopefully we´ll get tools from Firaxis to do the things we want.

I could go on but I won´t, but from what I´ve seen from this forum, I should really give it another go and play it out.