I say we have some player vs player combat. I like the idea of a revolution against another group, but really, anything provided it has players pitted against other players. It does not neccesarily mean killing the other team, but it would certainly happen. A revolution would work greatly to this end. You could have some poorly equipped revolutionists, against some well armed authorities. This way, one team would have a challenge and would not be able to afford heavy losses.
Yes, I think a revolution of some kind really is the way to go.
Next time, perhaps an expansion upon the Creeper's story.