I really liked the movie. It was cute. I think it also highlighted, for me, ways the series can effectively continue. Exploring the ways the new system really screws with the old one could be fun! Gems who have been left behind, gems who benefited more from subjugating others... I'm anticipating maybe finally meeting gems who are mad at STEVEN and not at his mom. He'd probably be stoked about that.
I also want to see how the characters explore their new roles individually. I want to see them grow into really self-satisfied people with their own lives and relationships. That'd be nice, too. The movie exploring what things defined that growth of identity was really fun imo.
Anyway, here's hoping things stay fun. I know a lot of shows run way too long and burn themselves out. I want to keep enjoying this one tho, so fingers crossed.