The Marvel Cinematic Universe is famous for its post-credits scenes, but not all of them have paid off. Years later, several teases remain unresolved, leaving fans wondering whether Marvel abandoned these storylines or is simply playing the long game. From mysterious characters and unfinished arcs to multiverse hints that never resurfaced, these post-credits scenes promised major developments that still have not happened. As the MCU continues to expand, the list of unanswered setups keeps growin