There have been a few ideas floating around over the years for adding larger asteroids and other obstacles in battles. I think this would be fantastic.
Currently it can't be modded in, as per Alex's response here:
http://fractalsoftworks.com/forum/index.php?topic=6265.msg101361#msg101361This wouldn't happen in *every* battle, only in particular areas. So in an asteroid field fight, or near a moon, you might have a much denser field of small asteroids, as well as a few larger ones that provide real cover. You could do something similar with space debris too, so when you're fighting in a ship graveyard (or the scene of a battle) there are huge chunks of metal floating about.
What I love about this idea is how it could dramatically change the battle style. Careful duelling around large asteroids, or frenetic knife-fighting in the confusion of a debris field . . . sounds like a lot of fun!