The original ending for Marvel's Thunderbolts was reportedly going to be pretty dark, but it would actually have worked perfectly for one of its key characters: Bucky Barnes. Bucky has had a rough go of things in the MCU so far, from nearly dying, to being brainwashed, to trying to pick up the pieces after finally being freed from HYDRA's control. Though he has seemingly been on the path toward redemption since Captain America: Civil War, his most recent appearance in the MCU timeline proved Bucky still has a ways to go until he is fully redeemed.
https://screenrant.com/thunderbolts-ending-deaths-bucky-perfect-mcu-story/
