I have mentioned before that my two favorite superpowers are invisibility and time travel. I do worry that if I were granted the latter, I might find barriers beyond which I could not travel, because it was some other time-traveler’s territory.
That is, we are living in the cleaned-up version of reality already. Man’s inhumanity to man may have actually been much worse. It may be that the existence of evil and incompetence and tragedy are not what require explanation, but the existence of good.