So what attitudes do your characters have to this? Do they use any such skills for their own ends? Do they get away with it? If not, who stops them and what impact has that on the future that would have been had there not been any interference to stop the character achieving all they want this way?
Time travel is another way of effectively looking into the future and discovering what is to come. Do your characters do this? What effects does this have on them physically and mentally? (It's my view there should always be a price for these things. I don't see how there could not be somewhere). Can any of your characters time travel or is it just saved for the ruling classes?