We have a number of house rules, but my favorite three are:
1>Heavy Bombers roll 2 dice and USE both. I hate that “roll 2 dice and pick the best result”. We all like that one, well, except for the person that is getting heavy bombed of course.
2>Mechanized infantry can blitz on their own. In some cases, it might allow certain countries to expand a little too quickly too cheaply, but overall this one works fine for us. We still use the Improved Mechanized Infantry tech. It simply allows Mechanized Infantry to attack @ 2.
3>Neutral Blocks. We divided all the strict neutral states into five blocks: South America, Europe, Africa, Middle East and Mongolia. This way, if a side attacks a neutral, it only affects other neutrals in a certain area. Just seemed to make more sense. We’ve been tinkering with the idea of making Argentina Pro-Axis, but just haven’t gotten around to it yet.
By the way, in HBG’s Global War 1939, an attack upon a strict neutral affects ONLY that neutral country and any of it’s colonial possessions. Most of the strict neutrals are a single territory, but a few are broken up into 2 or 3 territories and some have outlying colonies which will turn against you for attacking them. Frankly, I like that way even better than the Neutral Blocks.