Just a thought, since evolution is an ongoing process people may eventually develop organs more advanced than the brain. Not all animals have brains, and perceive through instinct. That there are dimensions beyond intelligence. Similar to how the perception of the dimension of sight is beyond the dimension of sound. In a way stem cells are more advanced than neurons.
So I'm resuming work on the Shadowstar Trilogy. I've decided that it will take place between the end of G4 and the start of G5, and two of the Lost Rulers will be Twilight Sparkle and Sunset Shimmer (who is the moon princess in my AU).