I think it would be cool if a race could use a bio weaponed to make a planet inhabitable if plaints are habitable in future releases.

All so this could effect mining from the planet once agin if the planet is mineabuble.


A norther version of a bio weapon could be used on ships to eat away at ships hall as seen on a episode of TNG and could be transfered to ships that come near to this ship with in a time pried..

Or a Krenim time weapon. Fire on their home planet, and all of their bases, ships and colonies disappear. They just... never existed!!!