I understand the needs for a more focused land strategy for German and I will try it for sure in the next matches, maximizing expenses for infantries, panzers and aircrafts. There are a lot of threads on this forum that proposes this as the better strategy for Germany.
However I believe that a minimum consideration for naval power is fundamental also for Germany. And for me finding the right equilibrium is still an open problem.
In my experience in games whit my playgroup, the loss of Baltic Fleet opens always an highway to invade Germany and Eastern Europe, so German defense had to be spread in three territories: Western Europe, Germany and Eastern Europe. This means a more tiny defense or to renounce to defend strong everywhere.
With Baltic fleet intact the Allied could hit directly only Western Europe, so Germany have to place fighters in two places: SZ-5 and France.
Ok, UK/US may always try to sink Baltic fleet and invade in the same turn, but if Sz5 is well defended this is not going to be a walking in the park.
A landing in Western Europe drain German resources to counter-attack.
A landing in Eastern Europe, even if unsuccesfully, disrupts the pipeline of infantry reinforcment on the Eastern Front and this is not a good event, it slows down the assault on Moscow.
A landing in Berlin… ouch!
I am aware that I am still green and inexpert at Axis and Allies but I am a good studious of History (and this is way I like A&A :-D).
Naval power may not be understimated without the worst consequences in every military conflict. The competitor that have the naval supremacy may lands troops everywhere and at same time is safe from enemy landings.
Napoleon quits all the plans to invade England after defeat at Trafalgar and that was the first step of his final defeat.
Germany have lost two World War, one after the other, also because German Navy has not been able to gain the upper hand (this is not the only reason naturally).
Roman Empire was built not only with the mighty Legions but also with a powerful Fleet that gained the control on Mediterranean Sea (that was called by them “Mare Nostrum”).
I am not saying that I do not believe in German Land Strategies. I am only saying that IMHO having also a complementary naval strategies may help to stay alive a little more time, and also may help in staying alive better.