>>104500105A bit before Ragnarok came pout people were throwing rumors around saying Hela was going to replace Death in Infinity Wars and Avengers 4 and that she and Thanos were going to have a romance. When The Unworthy Thor came out it ended with Hela and Thanos kissing and her saying she could give him Death or something, it was implied something big was going to come out of their relationship. Then Infinity Wars happens and during the Balder/Hela wedding, Thanos comes in and he just dumps Hela and leaves.
So nothing came out of the Thanos/Hela thing, I am guessing Aaron realized the MCU wasn't going in that direction and decided to bail.
Same shit with the Car-Ell crap, people were saying that Carol was going to be half-Kree and half-Human by birth and that her mother was going to be made a Kree in the movies. Pretty sure Editorial and Stohl caught wind of this and decided to try to synergize before the movies came out.