thenammagazine
Super Freak
https://whatculture.com/film/5-ways-x-men-days-future-past-setup-future-sequels.php
I like the idea of a mystery/open-ended ending.
The Comic left it unknown if the future still turned out dystopian or not.
Something like wolverine waking up in the future and looking around with shocked and/or scared exoression would leave it unknown what has happened.
And make the entire movie absolutely worthless.