I would second the motion that we need a clearer idea of what the intended mechanics are to be.
To build on that I would highly recommend priority be giving to developing what is essentially a firing range mission/mode.
Ideally this would allow us to test various gun parameters against statically generated targets instead of randomly generated targets. Environment variables being statically ideal would be good too. If we could also be given the ability to determine the number and design the targets ourselves, including the ability to have multiple individual designs in the same mission/mode that would be good too.
As an example: set up four DDs as targets, one with no armor, one with 0.5"(12.7mm) armor everywhere, one with 1"(25.4mm), and one with 1.5"(38.1mm)
Obviously that is just an example of one possible setup for targets and there should be other possible setups, especially for testing of larger guns.
Not sure what would be the easiest way to implement control over the variables of citadel and armor types but those would be important too.
Perhaps a way to repeat the ships at certain ranges so we can see the effects of range too.
Ultimately the idea would be to reduce/control as many variables as possible so we could give clearer feedback on the guns/shells vs armor model.