Just a quick thought -
One ord that we don't have is the US 1600 lb AP bomb; all we have is GP bombs. Hardening the ammo bunkers would make them much harder to pork but much more valuable to do so. Yes, I know the 1600 lb was primarily for anti-ship ops but it seems it would make a mess of reinforced concrete.
I like the general idea of differentiating the ords based on target requirement.