NOBODY would have guessed Coogler would go in the direction he did with the story.
AVA and OTHER directors passed on BP cause they felt like were going to make another cookie cutter Marvel film.
FEIGE LOVED CREED so much that he let Ryan bring in people outside the Marvel family. 3 of the 4 people won oscars.
Black Panther very well could have been Homecoming status for all we know without Ryan. Thats not to say other directors couldnt have produced or made something as good or better. However, Ryan was given Jackie Robinson status. He was the one allowed to enter and do his own thing and once he succeeded it opened up the door for others.