As you play the game you may notice a event were terriost kill a head of state of some Civ, and causes the dead leaders civ and the civ which had the terroist to declare war on each other. I was thinking they sould play bigger part in Galciv because it would offer a interesting chalange. You could use your spies to find out were there bases are and then sent your invasion ships to destroy the bases which would stop the terriost attacks. Another thing could be when a Civ is conqured that freedom fighters spring up to take back their planets, they would operate like pirates but gain planets by having a revoulution if the public support is low on that planet, and the civ could come back if the captial is captured by the freedom fighters. If you like this idea and have any sugestions on how you would improve this idea, please go ahead.