https://www.yahoo.com/entertainment/marvel-doesn-t-know-tell-190702871.html Marvel has considered and is still perhaps considering a series showing how Steve Roger's returned the infinity stones and Mjolner after Endgame and ended staying with Peggy Carter back in time. Marvel hasn't pulled the trigger yet because they can't figure out the heart of the story for it. They need an emotional story arc. They considered using a Red Skull redemption arc but it didn't make sense. Marvel's Statement: "Due to fan feedback, the idea of a Captain America Returns the Infinity Stones show did go through ideation. The crux of why it is currently not moving forward is there is no heart to show. Everyone agrees watching Cap return the stones (1 each episode) could be fun, but that is not a story. There is no emotional arc for him if at [its] core it is a reverse fetch quest. The most popular idea was that he would return the Soul Stone first, where Red Skull would warn him of the path he is headed on. From there, Red Skull would join Cap returning the stones as a way to redeem himself and return his own soul to him/free himself from being keeper of the Soul Stone. But his inevitable turn (he is Red Skull after all) never made sense either, and no other villains were considered."