@trulpen I really like the way you are thinking about how to pose thorny dilemmas for your opponent, but I don’t think spending 15 IPCs to save a damaged Battleship is ever a cost-effective play against an opponent who can calmly respond to an unexpected opening.
The thing is, Germany barely has a use for a battleship. They’re not going to get into round after round of combat where they can keep repairing it and leveraging the efficiency of the free hit. They’re not going to be doing much shore bombardment. At least in the Baltic / North Sea region, they’re not brushing up against factory limits; you can drop 20 units a turn. As aequitas points out, in the long run Germany isn’t a naval power anyway; the US & UK will eventually win control of the Atlantic Ocean; it’s just a matter of time.
Would I spend 5 IPCs to save a German BB? Sure. It’s of some use; it’s a large piece. But 15 IPCs is almost the whole cost of the BB. The Axis need to expand explosively in the first few turns in order to compete; any investments you make need to pay a very high interest rate. The interest rate on rescuing your BB is low because you buy the AB turn 1, then turn 2 the BB goes back into the Baltic to lick its wounds, then on G3 you get to move the BB somewhere. Where, exactly? To hit Leningrad? I mean, OK, maybe – but that does what, exactly…reduces your chances of losing an 8 IPC destroyer? And has decent odds of bombarding one Soviet infantry? So ballpark you’re earning something like 4 IPC + 2 IPC = 6 IPC, two turns later, on your 15 IPC airbase investment.
Meanwhile, if you just leave the BB alone, and let it stay wounded in the British sea zone, it’s got a 2/3 chance of killing a British destroyer or fighter – there’s your 6 IPCs right there.
So, yes, you’re laying an interesting trap for your opponents by inviting them to hit a BB that’s defended by 3 fighters and either come in too weak or pass up on the chance to do Taranto and hit mostly air…but if they see the trap and ignore your BB and do Taranto anyway, then you’ve spent 15 IPC to save a piece that’s really only worth about 10 IPCs at most to the German side.