TIP: Remove Rathar sequence entirely. Proof of point, this took me five minutes to edit:
https://www.youtube.com/watch?v=736lH16Szns&feature=youtu.be
It does nothing to the story, it destroys pace, it gives us deus ex machina’s, it gets Chewie shot within his first five minutes back into the movie, we are introduced to two silly gangs that serve nothing to the story or the characters and the CGI for the rathars is not particularly good or interesting.