With the new update, I would LOVE to see something like warthunders armour viewer, and penetration simulator.
If you are not familiar, the armour viewer highlights the armour layout with different colours, and lets you see exactly where the armour is and isn't, as well as a calculator for effective armour from the cameras angle.
The penetration simulator allows you to select a cannon and range to fire at the target. The camera sets the angle.
With the ability to fine tune the armour layouts, we are going to need much more information to make these features useful. Either in the ship designer and/or some form of post battle analysis showing how your ship was/wasn't penetrated.