I know I'm new here and new to the game. However, I've been thinking about something like this myself. Looking at a way to start a campaign, but not jump whole hog into the Alien morphs etc.
One idea I had was a fungal infections. Something like the fungi that makes 'zombie ants' .
Now putting that into Chariot of the Gods, I'm not sure how it would fit in, but it is an idea, or at least a start of one.
"And so I am become a knight of the Kingdom of Dreams and Shadows!" - Mark Twain
Please Forgive all spelling errors.