1. Comic Book History: In Marvel Comics, the Fantastic Four and the Avengers have a long history of collaborating and fighting side-by-side against various threats. They've been allies and even temporary members of each other's teams.
2. Similar Goals: Both teams share the same basic goal: protecting Earth from various dangers. They also possess unique abilities and a dedication to heroism.
3. Potential for Dynamic Interactions: The Fantastic Four's unique personalities and powers could create interesting dynamics within the Avengers.
4. Fan Desire: Many fans strongly desire to see the Fantastic Four join the MCU, as they believe the group would add a unique element to the Avengers' roster.
5. The "What If?" Factor: The "What If...?" series on Disney+ showcases alternate realities, including ones where the Fantastic Four are part of the Avengers. This keeps the possibility open in the minds of fans.
However, there are also reasons why the Fantastic Four might not be joining the Avengers anytime soon:
1. Rights Issues: The rights to the Fantastic Four were previously held by 20th Century Fox, complicating their integration into the MCU. Disney's acquisition of Fox in 2019 has resolved this issue, but the process of introducing the Fantastic Four into the MCU is still ongoing.
2. Separate Storylines: The MCU is currently focusing on establishing different storylines and teams, potentially delaying the Fantastic Four's full integration.
3. Creative Considerations: The MCU's creative team may have specific plans for the Fantastic Four that don't involve them joining the Avengers, at least not immediately.
Ultimately, whether the Fantastic Four join the Avengers remains to be seen. The MCU is constantly evolving, and the future of the Fantastic Four is still unfolding.