The Red Dust in 'Black Widow'
The red dust in Black Widow was a substance that helped Black Widows free themselves from Dreykov's mind control. Yelena goes on the hunt for widows in the red room during the film, and the movie ends with her discovering that there are thousands of widows out there. Is it ever answered whether Yelena found and freed them all, or could they all potentially be reactivated at some point by Dreykov's mind control system?
I also hate that Taskmaster's death wasn't shown as a more impactful death to Yelena. During the Black Widow movie, Yelena was repeatedly crushed any time one of her former Widow sisters died. Taskmaster was mind controlled even by her own father, something that would seemingly make her more sympathetic to Yelena. However, in the New Avengers, Yelena seems rather unphased by Taskmaster's death and remarks that the life of an assassin is a shit life. I get that Yelena is used to death and killing, but I still find it out of character that she wasn't at least partly sympathetic to a girl she helped free and who Natasha always felt guilty about, believing she had killed her as a young girl in an explosion while trying to take Dreykov out.
Do you think we'll ever see Dreykov's mind control system and the red dust again?
She-Hulk's Winter Hulk form might be a creative way to bring it all back...