I used to gripe about lack of separation between AP 1 and AP 2. "What's the point?" Now AP 1 has the nifty trait of having nothing but penetrating hits (when allowed...stupid smoke) on vehicles. But what about the infantry? I think the two armor penetration values could stand a little more separation. I see a significant difference between the weapons that boast those AP values. I just think that there should be another tier of armor that creates still another degree of differentiation.
I suggest that there exists special armor with a regular armor save of 1+ -HOWEVER- a roll of a 1 always fails to save. Sounds dumb but it at least allows the wearer to make a save against AP 2 weapons. Or maybe just war gear that explicitly states that it can still save against an AP 2 weapon.
It just makes sense that power armor can withstand an assault cannon but fail to an ion cannon. Terminator armor can resist that same ion cannon and yet fall apart under plasma fire. Yet no armor exists that can resist that plasma yet still fail to the uber railguns/meltaguns/and the like of the 40k universe. I think there's a difference that exists between the precision penetration of a railgun and the indiscriminate demolisher cannon that can still be acknowledged in a gaming sense in regards to infantry.
I know this suggestion will probably irritate non-space marine players (like people I know) who can't stand the marines getting any more benefits. But I think that such an armor can appear in a variety of ways in all armies.
What do you think?