I’ve added some content to my sci-fi game since I posted it in here. Check out the “Frontier Space” doc if you’re interested in a deadlier campaign with less powerful characters and a sort of space western feel to it, but be warned that it’s only barely been playtested.
https://drive.google.com/open?id=0B3xqNeRqcO8RVFRCcHhvaUdyLWM