I'll put this bluntly: the game needs better corpses.
I'm not really ok with the whole "spawn a few of this and a few of that" idea, I think orbital structures and capitol ships need to spawn debris that looks very close to the actual structure. a great example is the akkan and the gauss cannons, the akkan should go titanic and split down the middle and float derilect for a little while, the gauss cannon should have piece of it blown off but should remain otherwise largely intact.
if performance becomes an issue its as simple as letting the complex debris float derilect for a few seconds before making it explode into a set of smaller, "random" debris. but to have actual immitative persistant debris would be the best scenario.