What if Hilderic had not been killed at Gelimers order? How would ERE handle Africa if Hilderic was alive and in their possesion? Justinian's casus belli for invading hte Vandal kingdom was to reinstate Hilderic, a pro-Roman king who had been deposed by Hilderic. Hilderic was tolerant of the Catholic church, and relaced oppression against Catholics. Gelimer then led Arian coup of Vandal nobles which deposed Hilderic.
https://en.wikipedia.org/wiki/Hilderic
https://en.wikipedia.org/wiki/Hilderic