I think it would be cool to have space battles similar to the old star wars battlefront games. With the disappointment of the new star wars battlefront game not having space battles it would be cool if bungie would pick it up. As far as I can tell your ships in destiny are nothing more than a load screen. But adding space battles would make them much more valuable with each ship having different stats and attacking options. It would be really cool to have a PvE and PvP option in space battles. And I'm sure you can make a space battle raid too.