Germany can actually afford to tech rush fighters, tanks, infantry, and AT at the same time. A lot of techs are useless or have very little effect once you learn the real mechanics of the game so by skipping these techs and not wasting precious leadership on useless spy and diplo missions you have enough leadership to always research the important techs ahead of time. A lot of new MP players don't know that tech stealing is terrible, influencing countries is bad, and around 20% of all techs literally do nothing. When I say they do nothing, I mean the mechanic is actually broken and doesn't have an effect in game, but paradox never fixed it and SP players don't know because no one told them. Prime example is any air defense tech, because air defense literally does not work in HOI3.
If you want to try MP with an experienced no BS group, I suggest checking out the paradox HOI3 MP forums. Some groups have over 20+ FULL CAMPAIGNS played, mostly with the same players. We've figured out every possible exploit, bug, and balance issue there is. All of them are covered in the rules. It's probably gonna take a long time before we're able to address the same issues in HOI4 MP but joining an already existing group is always better than starting a new one because we are always looking to create good rules for a balanced game.
