20 Biggest Wasted Opportunities In The MCU

20. Introducing The X-Men

Marvel has plans for bringing a new X-Men roster into the MCU, with the likes of Sadie Sink and Kit Connor landing key roles in the team for future movies. 

But genuine question: Why has it taken so long?

With Avengers: Doomsday, the franchise is bringing back the old X-Men guard (Patrick Stewart, Ian McKellen), and some previous films have seen the return of Hugh Jackman and Kelsey Grammar, but until Sink's debut as Jean Grey in Spider-Man: Brand New Day, we've never been given a real answer to the MCU's X-Men.

Given the X-Men's pedigree, it's a wonder why Marvel wouldn't have tackled something sooner. Of course, the mainline Fox X-Men films were running until 2019, when the MCU was already in full swing, but even so, no attempts were made to bring the two together or shake things up with new faces until now.

Whatever the reason, we now live in a world without any of the MCU originals forming a bond with Marvel Comics' most famous team, and that feels like a major loss. We'll have to see what the future holds, I guess.