Some of these suggestions seem a little far fetched. Especially the ones where you get Germany to all out blitz Russia. I can forsee doom in your future. With Germany you have to build up before you can even think about hitting Russia. I will build Men the first two turns, then start building tanks and men and stacking them in either Korelia or Eastern Europe. Make a stack big enough there and you can move it against Russia at about the same time Japan starts knocking on their door.
As for the straight bum rush, remember that you can’t support it, that America and Britain will be beating a weakened western Europe, and that when you finally do run into the 20 infantry sitting in Russia or the caucases and get beaten you are in a world of crap on your eastern flank as well.
Every time I see Germany go apeshit I just sit back and chalk up another win.
Germany is now the Russia of the original game, sit, wait, and build.
(in lieu of the naval inf build, I also have some luck on hitting heavy bombers early and using them, trn and inf…)