In all of the fan fictions I plotted, I always had Charles and Erik dead. With Jean being the "daughter" of Charles and Lorna being the daughter of Erik. They are the more liberal, "modern generation" views of their predecessors.
I always wanted Jean to take control of the "X-Men" label and launch them into one of the world's greatest superhero teams, much like what Uncanny Avengers volume 3 was. Whereas I wanted Lorna to take control of the "mutant" label and rebuild Genosha as the Princess of Genosha, then act as a global politician to fight for mutant rights.