I enjoy Zenos because he's not another navel-gazing or self-aggrandizing narcissist with a god complex. He's a combat addict and knows it. Final Fantasy doesn't need another copy of Kekfa or Exdeath. Give us a villain that keeps coming at us even after we are far beyond them on a personal level. Show us a reason to pity them, not based on their misuse of power, but rather that they as a person never grew at all.