If you loved Ranma ½, try HeartCatch PreCure! the Movie: Fashion Show in the City of Flowers!?
A bridge between a film you've already seen and one most people haven't. HeartCatch PreCure! the Movie: Fashion Show in the City of Flowers!? has roughly 6.1× fewer votes than Ranma ½ — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Ranma ½

HeartCatch PreCure! the Movie: Fashion Show in the City of Flowers!?
What they share
Theyboth carry the playful mood tag, and they sit in Action / Comedy / Fantasy territory. If that's the register that drew you to Ranma ½, the second film will land in a comparable space — through a different lens.
What HeartCatch PreCure! the Movie: Fashion Show in the City of Flowers!? is
An all-girl squad jets to Paris for a runway show only to swap heels for heroics when a lizard-slaying villain crashes the haute couture. After swapping teenage angst for magical girl gear they team up with a moody Francophile named Oliver. The film succeeds in not tripping over its own petticoats.