This is what I worked on after Operation Starfall (if you have read my posts on diesel punk and the Luna spacecraft and like them but didn't hear of this go check it out.)
I've included notes on various powers they have, how to get around those powers and some devices that will negate their abilities or replicate them. There's a section on their homeworld and civilization and notes for dropping it into existing games as overtly or subtly as possible. Finally there's a chapter on playing these superhumans, which may not be as easy as you think (take a look at the introductory sentence of this paragraph.) Class levels let you drop them into your game as anything from exceptional muscle to campaign bosses.
I hope you'll give it a look.