By doing this, the movie actually opens itself up to more possible endings than were really an option in the original version.
The basic idea, set up by YouTuber Nerdwriter1, is to make Jennifer Lawrence the focus character of the film and actually open the movie with her waking up.
This would allow the audience to try and figure out what’s going on along with her, rather than knowing the truth along with Chris Pratt.
Check out the video below for a more in-depth analysis.