I was coming to the Mod forum to ask if it was possible to do an armor mod like this one, and here it exists!? What is this sorcery? Really excited to try this mod out. Had a few questions and thoughts.
Most of your starting weapons can't even touch the mule, because it's 650 armor is just too strong. Only the Assault chaingun on your wingman can function, but his thumper murders you.
This is actually a pretty basic balance test that should be addressed. Because no armor is 100% perfect and homogenous, there are always weak spots, joint between plates, viewports, Engine Nacelles, weapons ports, sensors, exhaust ports, manufacturing defects, etc....
Perhaps there should always be a fixed ~5% chance for a critical hit where the projectile bypasses 60% of armor. This would give weaker ships and weapons at least SOME damage which is a little more realistic. A direct hit to the bridge window or a torpedo to the rudder/engine exhaust has a good chance of causing issues no matter how much armor the belt has.
In battleship shellfire AP caps would be designed to dig into a thick armor and rotate to a degree while still delivering the majority of their kinetic energy to armor even at 35-45 degree strike angles. Non AP shells tended to ricochet off at those angles especially when striking non face hardened armor often used on deck and turret roof armor plating. Plus armor is not one smooth surface, there will always be lots of different protrusions so the hit angle is perhaps over-emphasized in calculations.
Do all ships share this exact same Citadel model? It's perhaps too much of a generalization
because frigates and fighters realistically might only have a thin layer of outer armor that would deflect only low caliber projectiles. While the most protected ships, like US Navy CV Lexington class would often have up to layers of 3 torpedo compartments, each capable of blunting most of a 2000 lb he. blast, requiring 3 direct hits to the same area to even have a chance to breach the main armor belt. Big surface ships that well designed could REALLY take punishment, taking 100+ direct hits with bombs or large caliber weapons to sink. Having the largest ships rock 3+ layers of anti missile compartments vs 2 or 1 for smaller ones would be an interesting differentiator and accurate to contemporary armor schemes.
Since there is already an Auto repair damage sub-system, maybe you could allow that to repair damaged compartments armor plating, making the larger ships last longer in battle?