Let me guess. Reactor: Self destruct if feature is enabled in AIProfiles.tbl. Also, I know if a fighter bay is destroyed, it can stop fighters from being launched, but that doesn't seem to work on the final mission of Silent Threat on the Hades. So I'm guessing it is an AI enabled thing too. There are also several other uncommon subsystems depending on the ship. Also new ones on certain models that probably don't do anything if destroyed. Like collector (gas miner), (radar dome) AWACS, blade, core, shell (comm node) and fan-made models that have things like hanger, cryo-chamber, ect. Oh yeah, what if you destroy the bridge on a Typhon or a solar panel on a Fenris or Leviathan? What about a radar dish on other ships?