I think this could be an interesting mechanic, but it may dissuade and nullify certain group tactics, such as two brawlers. For example you could have a ship rush in against two brawlers, with it dealing some damage on the way in and explode on them, and then have an ally pick off the weakened ships. If this was implemented it would hinder certain play styles, and at times may force ships to avoid playing at certain ranges, and I don't like the idea of a mechanic that limits any play style. I also think it rewards suicidal tactics too much, in a real world scenario and in a game a crew should avoid dying, not use it as a tactic. Don't take what I say as a shutdown of your idea, just as a separate viewpoint.
One more thing, would you mind specifying what the damage a destroyed ship would apply at maximum and minimum ranges. X stacks of fire, x armor/hull damage, x shatter damage etc.
