In ‘Marvel Studios’ Assembled: The Making of Agatha All Along, ‘Aubrey Plaza talked about playing Death, explaining that she enjoyed the character’s complexity and contradictions.
She appreciated being able to play three different versions of the same character, which she felt could work well in the MCU due to her otherworldly and yet grounded nature.
I don't think it would work to try and shoehorn her into the next Avengers movie, but if a script calls for her, I think she'll be great in that kind of context.