Right now we have Class I - VIII Armour Upgrade 'booster packs' right? They have their pro's and con's that we get a argument about now and again.
Now what I propose is different 'types' or materials of ship hulls. What they do is give you some protection against different types of firepower being dished at you. Here are the two that spring into my mind:
(1) - Reactive Nano Armor
The material in this armor is designed to blow off from the main hull when faced with explosive force. The nanobot packs that is contained within the hull pack almost instantaneously, replaces the lost block of armor, but it should be noted that these packs can only replace parts of the armor, and not the internal workings and direct breaches that normal nanobots can repair.
(2) - Electron Reflective Armor
This armor is extremely polished and smoothed to extreme laser precision, and then with exrta power packs, charged with an electron pulse to help slightly deflect any laser or pulse type weaponry to a certain point. This makes conventional fire less damaging.
-------------------
Now the Reactive Nano Armor is going to help protect your ship against ballistics, those would be missiles. I'd say they give up to a 20% damage resistance, much like our shields against certain weapon fire. Conventional gunfire would hurt you all the same.
The Electron Reflective Armor is designed to help protect against the conventional gunfire, lasers, pulse, neutron, tachyon etc. Up to 20% same as above.
What you guys think of these hull types? It could add more strategy and we could have levels of them same as the current armor upgrades.