12-11-2016, 08:06 PM
I'm thinking that the doors can be made invulnerable thru "Nano-Protected" property. Like Reinforced Walls, except actually good at something. Nano-protected resists the matter-changing ways of the RCD, has random wires than other doors, and is immune to Chemicals. Along with that, they should be a little stronger against explosions, but not so much that Explosions are worthless.