What material would be best suited for an ultimate being? We've seen how characters in the past needed some sort of physiological upgrade to scale with their growing power, so what'd be the end goal?
Thinking about characters like Sylvanas or Turalyon, the further you go in one direction the less you can maintain your base form. Illidan, Malfurion, and Neltharion are great examples of this. So when it comes to our current warcraft powerhouses, what's the next step in their progression? What's the pinnacle they can reach and at what cost?