If you ever re-incarnate the Earth Civil War quest in a future upgrade, wouldn't it be great to have "Earth Alliance GOD Satellites" stationed around Earth orbit?
IIRC, these were a major obstacle for the B5 fleet that went in to free Earth from Clarke and his minions.
Information on them can be found here:
http://www.kitsune.addr.com/SF-Conve.../Earth_GOD.htm
Just an idea.