Marvel studios are usually good with their approach and dedication to deliver great portrayals of their characters. I didn't get any of that with T'Challa. It's like they gave Coogler a lot of rope and he didn't understand the character and didn't want to, instead using him as a vehicle to tell a killmonger movie because that's what he personally relates to (what does it mean to be African as an African American) and its painfully blatant, even calling killmonger a "poor batman" all of this results in an easily redundant T'Challa.
In fact, they can do whatever they like. I wash my hands off mcu T'Challa.