Definately a good set of rules, though I am less enamoured with the Know The Rules rule. I would replace it with Know Enough of the Rules and Know Where to Find the rest. Of course, this depends on the type of gaming you do and the type of players... Go to Comment
How would they react to explosions (such as fireballs and the like?) we have both heat (which they like), and sound (depending on your take on Fireball and similar spells - Boom vs Woof!). Go to Comment
This fits the challenges and links it is associated with, and I love the imagery of it.
It may be hard to use in many Sci Fi campaigns due to the difficulty of anyone encountering these beings, but I think it could fit well in a Supers game, if you have heros in the Superman/Silver Surfer level of power available. Go to Comment