I am primarily concerned with 'linked' secure tech and 'destroyed' items. These items serve very little purpose and should just be purged from the item listings/never added to them when hawked in the market. The action description when browsing already states that you're sifting through useless junk and other crap, so these types of items shouldn't even pop up.
This would save some small amount of server space, and get rid of the annoyance of having the same broken item pop up again and again when you're searching for something.