>>106535958>Fantastic FourThey actually where a team of rocket scientists that went into space in the1960's, but got caught in a "energy field" that flung them into the future and gave them powers.
At the end of Endgame is, using the reality stone to "bring everyone back" also brings them back to earth.
A lot of the story can be the fish out of water, with their 1960's attitudes clashing with the 2010's of today. This aspect that was really popular with Captain America.
For inspiration, look at the movie "Blast from the Past" or "Pleasentville".
Make it comfy, don't take it too seriously. Keep in mind that "The Incredible" essentially took some of the best aspects of FF and was able to be a well written film as well.
>X-MenKeep the X-Men as covert as possible. Xavier was a Vietnam vet, started the original team in the late 70's, all new team in the mid 80's. He has been keeping the discovery of mutants mostly a secret by using telepathy on people.
Magnus runs the Brotherhood as sort of a hippy commune that went south at some point and has now become a Waco situation.
Disney's first X-Men film should be an adaptation of "God Loves, Man Kills". Make it dark, make it 80's (it's all the rage right now) but let them wear their comic book costumes.