I would love to bring Natasha from the point in her life where she is jumping off a cliff to her death in hopes that the rest of the Avengers will be able to pull everyone back from the Snap. She is unaware of any battle causalities (looking at you Stark) but generally aware of most thing through endgame. She will literally be confused as to why she jumps of a cliff and lands rather ungracefully on a beach.
Obviously, I'm down for anything, but wanting to touch base with her Marvel friends.