I think Ewing will explore T'challa's powers rather quickly. We got new stuff from him foe Whit Tiger, Power Man, Blue Marvel, and Monica. I really believe he will embrace KotD and Wakandan tech and show us some cool stuff. He also has a nice way of exposing and demonstrating these things without narration boxes. Even if Ultimates doesn't last long I think he will lay some solid groundwork for whomever gets BP'S solo.