Instead of E6 and The Sweet Spot which I am still chewing on, I am going to another group of Supers, an upstate New York group of Gifted.
Again I have tried to capture the flavor more than the letter of the rules. In addition the "unusual DNA" that many of them have is represented with being a non human. For simplicity in their verse certain humans carry latent DNA from other races and this manifests for some at puberty and in the form of supernatural powers of different sorts.
The Return of Planescape? - Curious. There is a brief note on this 'countdown' at Enworld.
13 hours ago