@Flashman:
UK planes can land in Karelia after sinking the German fleet.
If Germany is going to use the Baltic as a RATS between the fronts (rather than, for example, it’s excellent rail network), then it needs a carrier or two there, and can Germany really afford this sort of luxury before it’s eaten up half of Russia?
Yeah, at some point your fleet is going to be put at risk and require a carrier for protection. If there’s some way to have fighters scramble from land zones nearby when its moved within the Baltic, that’d be cool but probably not enough at some point in the game. Baltic fleet at any point is a gamble that you’re going to get more out of it reinforcing Norway and Finland, and threatening and invading Britain and Russia, than the Allies will get destroying it or taking advantage of your weakened land forces.
Its an expensive proposition, and usually gets destroyed by combined British and US attacks, but if it buys Germany 2-3 more turns it can give plenty of time for Japan to finish things off in Russia. It usually does a good job focusing the Allies on Europe since it can threaten many fronts, but the downside to any big fleet is that Russia is going to get huge in the short term. If Russia gets reduced income like the US before war is allowed or has severely reduced units at game start then that may not be a problem.