If you loved Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!, try Pretty Cure All Stars: Spring Carnival
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!

Pretty Cure All Stars: Spring Carnival
What they share
Both films are directed by Junji Shimizu, and they both carry the atmospheric, cozy, foreign gem, late night mood tags, and they sit in Action / Adventure / Animation / Comedy / Family / Fantasy territory. If that's the register that drew you to Futari wa Precure Splash☆Star the Movie: Tic-Tac Crisis Hanging by a Thin Thread!, the second film will land in a comparable space — through a different lens.
What Pretty Cure All Stars: Spring Carnival is
The seventh crossover film really leans into the song-and-dance possibilities. When mysterious creatures invade the land of Harmonia, all the Pretty Cures must reunite. It's hard to say whether the world was clamoring for extended Pretty Cure dance sequences.