I understood your point I just dont agree with your analysis. The idea of being separated from loved ones, not knowing if you are going to get back home, and fighting to get back home is not generic themes of slavery, especially if you look at slavery from the perspective of those who were born in the Americas and knew nothing of Africa. Additionally, there were some slaves who lived on plantations with their loved ones (maybe three to four generations even) and never experienced being separated from their families. So it's all about perspective. The experiences of longing for home and fighting to get back home would be something that many black Americans many generations removed from Africa couldn't relate to and was why in Harriet's case when "conducting her train" had to threaten those escaped slaves with death for pushing to go back to their home or plantation - because that was all they new.
Nevertheless, to understand the parallels between the Middle Passage and Coates BP look to his explanation:
"Sure but it’s really the Middle Passage. What Dani captures so well is the distance between T’Challa—kidnapped, mind-wiped and enslaved by Imperials—and his African home, represented by his beloved Storm."
Those elements all of what he said, whether you see them as generic or not, were still crucial aspects that many enslaved African Americans would or could never experience. African Americans predominantly wouldnt have to worry of being kidnapped, or longing and/or fighting for a home they had never been to nor any of their living relatives. So again I respectfully disagree with your points here. Tchalla, seeing that he did one day wake up with ONLY memories of Ororo (or africa) and longing to be with her, then fighting or rebelling to get back to HER is very specific to the Middle passage and what the Africans aboard those ships experienced. Again, just because he didnt execute it to your liking does not mean it has zero connections to it.