well, acid missiles are in the book
however the problem right now is that we have no real distinction between which mechs or vehicles are using ferro fibrous and which ones are using standard.
I'd say change it to be something where the missiles do very little damage themselves, but add a small damage multiplier to affected areas, essentially softening armor. So maybe 1 acid missile causes like 1/5th the damage of an srm, but the affected location will now take 1.5% more damage from any other weapon, and have the affects stack per missile. But have the missiles have a bit of spread to help spread the love.
So lets say you end up sending and entire 6 pack into a CT means every other weapon attack will do 9% more damage there, until the mech repairs
So yes, this is the mech equivalent of jarate (the jar based karate)
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