If there was a problem with dilithium going boom (or at the very least, losing its effectiveness over time) and all methods of recrystalization were lost/forgotten/banned/ceased to work, etc., This might bring us back to the possible idea of an attempt to embrace Omega as a possible "unlimited" power source, which added further complexity and destruction to the existing problem. I'm definitely on board with the Omega Particle as being the ultimate source of this "Burn" thing. Hell, if the Borg couldn't bring the full force of their technology to bear on it before taking out a cube or two, I'm not sure that the Federation could figure it out in their "pure fucking hubris".
