Great input, thanks all. I know that for A&A Europe, playing all Axis, then all Allies made it a 3 or 4 hour game instead of an 8 hour game without diminishing the fun factor, so I’m glad to hear that may be doable in Global '40.
I like the blockhouse idea and I could very easily add that to my next HBG pieces order (I’ve purchased quite a few pieces from them over the years and planning on adding the recent UK and upcoming France, Germany, and US supplement sets)… not sure if the fun factor of blockhouses & mines would be enough in exchange for the additional rules though. @crusaderiv and Narvik: What would be the rules/prices/attack factors associated with block houses and mines? Or is this a special use for only the Maginot line? I could see this being fun for the Maginot line and an invasion of Normandy or even a UK/USA invasion, but not as much if there are blockhouses and mines all over Europe.
@ Flashman & Narvik: I agree that cooperation between Russia and the other Allies took a very different tone than cooperation between UK/USA and Germany/Italy. We don’t really know how well the European Axis and Japan would’ve cooperated in battle. I like the idea of a certain separation for Russia and Japan, but to save time, perhaps they could still go at the same time and have specific rules for cooperation. I could see any of those groups having joint participation in the same battle, but there would be coordination issues. What about for each battle engaged by joint powers (Russia & Other Allies or European Axis & Japan), one group (decided by that side, or if indecisive, the opponents get to decide) must complete one full round of combat before the other power can participate on the battle board, and the later side must survive 1 additional round of combat if there’s a retreat? Germany was accused by the Hungarians of using them as cannon fodder and I’d bet Russia would’ve done the same to their allies. So another possibility could be that Germany could decide whether to take Italians, Japanese, or Germans as casualties in a joint operation and Russia could decide whether to take their own or their ally.
I hesitate to say that Italy could attack anyone on R1 primarily because it would make them unrealistically strong in the Mediterranean: they could wipe out the British mediterranean fleet while taking Egypt, Alexandria, and Anglo-Egyptian Sudan with relative ease on R1. Also, they didn’t jump into France until they knew they were safe doing so and likely wouldn’t have gone in without knowing the German attack would work. I’m not sure that Mussolini would’ve been ok with the Germans sending some of their French invasion forces in via northern Italy prior to their late invasion of France. I also would prefer to start in the 1940 scenario, where Germany has already moved into Belgium since I’m getting out of scope if I start trying to create a 1939 scenario: for that, I’d probably just take that 1939 game mentioned on HBG and mod it rather than turn the 1940 game into 1939.