If you loved Tokumei Sentai Go-Busters VS Kaizoku Sentai Gokaiger: The Movie, try Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie
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.
You already loved

Tokumei Sentai Go-Busters VS Kaizoku Sentai Gokaiger: The Movie
→
Try this next

Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie
What they share
Theyboth carry the playful mood tag, and they sit in Action / Adventure / Science Fiction territory. If that's the register that drew you to Tokumei Sentai Go-Busters VS Kaizoku Sentai Gokaiger: The Movie, the second film will land in a comparable space — through a different lens.
playful
What Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie is
You're a space pirate, hunting alien treasure across the cosmos. But the Galactic Union's top cop busts you. He gets busted, too. Now Gavan's in the Phantom Zone and you have to spring him. Nakazawa’s lens flares suggest a shared history of tokusatsu adventure. The film coasts on team-up energy.